Doped graphene electrodes for organic solar cells pdf files

Jul 31, 2017 to test their graphene electrodes, researchers fabricated solar cells with top and bottom electrodes anodes and cathodes made of graphene, indium tin oxide ito, and aluminum in the. Lowtemperature synthesis of multilayer grapheneamorphous. Nitrogendoped graphene frameworks ngfs with a large specific surface area 1149 m 2 g. Graphene quantum dots make the doped graphene more suitable for anode electrodes of organic solar cells. Use of dopedgraphene transparent conductive electrodes for highperformance siquantumdotsbased solar cells 14. Conclusions and outlook 6343 author information 6344. Graphene materials and their use in dyesensitized solar cells. Metalelectrodefree windowlike organic solar cells with. Pss, which is sandwiched between silicon wafer and graphene electrode. A panel of eight plastic solar cells based on inorganic nanorods and semi conducting polymers. High performance metal sulfide counter electrodes for organic sulfide redox couple in dyesensitized solar cells. Solar cellsnnanostructured electrode for organic solar cells. Highly flexible, highperformance perovskite solar cells.

Jan 06, 2011 graphene electrodes would match flexibility, transparency and low cost needed for organic solar cells. Metalelectrodefree windowlike organic solar cells with p doped carbon nanotube thinfilm electrodes il jeon1, clement delacou2, antti kaskela3, esko i. Doped and textured graphene as electrode for organic solar. Starting from few percentage points in 2000, they have. Graphenebased transparent electrodes for hybrid solar cells. Mar 12, 2014 ultrathin organic solar cells with graphene doped by ferroelectric polarization. Jul 17, 2017 whether through enhancing current solar cells, optimizing the properties of existing non graphene based solar cells or by developing a new range of graphene photovoltaics, it is obvious that graphene has a role in this exciting and swiftly advancing field. The application of highly doped singlelayer graphene as. Environmental and economic assessment of itofree electrodes for organic solar cells christopher j. Pss layer has been replaced by graphene derivatives and are generally used as holetransport layers in organic solar cells. The devices also show good air stability, indicating that multilayer graphene is a promising environmental barrier. The devices also show good air stability, indicating that multilayer graphene is a promising environmental barrier that can protect the organic solar cells from air. Aside from the two electrodes, traditional organic solar cells contain an active pedot.

Recent development in itofree flexible polymer solar cells ncbi. R sh of an hno 3 doped graphene gradually increases under ambient conditions. Pdf in this work graphene sheets grown by chemical vapor deposition cvd with controlled numbers of layers were used as transparent electrodes in. In addition, its brittleness in nature could limit the future development of pscs, particularly in a flexible format. By using moox doped swcnt films as transparent electrode, jeon et. Mesoporous nbdoped tio 2 as pt support for counter electrode in dye. Synthesis, characterization, fundamental properties, and applications. Besides the siliconbased solar cells, quantum dots qds, e.

The resultant ngnp was deposited on fluorine doped sno2 ftoglass substrates by using electrospray espray coating, and their. In organic solar cells, a combination of two components is normally used in the photoactive layer and the rare and expensive material indium tin oxide ito is used as transparent electrodes. The impact of graphene on the fabrication of thin film solar cells. Collaborative innovation center of chemistry for energy materials, xiame. Organic solar cells with graphene electrodes and vapor printed poly3,4ethylenedioxythiophene as the hole. The shiny ovals are the aluminum back electrodes of the individual solar cells. Audoped single layer graphene nanoribbons for a recordhigh. The crystalline phase structure consisted of a mixture of anatase and rutile, ranging from 30 to 80 wt % rutile. Graphene has been proposed as a promising transparent conducting electrode material in organic photovoltaic opv solar cells to substitute the widely used indium tin oxide ito. Sensors and biosensors based on graphene are expected to. Novel technique using graphene to create solar cells. Efficient organic solar cells based on a double pin architecture using doped widegap transport layers.

Wu, dyesensitized solar cells based on anatase tio 2 nanoparticlenanowire composites, j. Jul 28, 2017 in addition, a graphene electrode can be just 1 nanometer thick a fraction as thick as an ito electrode and a far better match for the thin organic solar cell itself. P and n doped graphene electrodes have been used and the solar cells achieved a maximum efficiency of 1. N doped graphene nanoplatelets as superior metalfree counter electrodes for organic dyesensitized solar cells.

I the use of graphene as a 3rd component in the active layer and ii the use of diamond as an. Transparent conductive electrode tce is a main building block in organic solar cell in determining the device performance. Published 23 november 2010 iop publishing ltd nanotechnology, volume 21, number 50. Organic solar cells with graphene electrodes and vapor printed. Nitrogendoped grapheneplatinum counter electrodes for dye.

Transparent, flexible solar cells combine organic materials. Preparation, characterization, and electrocatalytical performance of graphenemethylene blue thin films, nano research. Various studies have reported opv devices with graphene electrodes showing comparable performances to itobased opv cells. Ju mj1, kim jc, choi hj, choi it, kim sg, lim k, ko j, lee jj, jeon iy, baek jb, kim hk.

Chandler, mit news the structure of graphene, a flexible material made of carbon atoms arranged in a layer just one atom. Pedot with polystyrenesulfonate pss as the solidstate dopant. Flexible graphene electrodebased organic photovoltaics with recordhigh efficiency. The first problem is depositing the graphene electrodes onto the solar cell. Efficient organic solar cells with polymersmall molecule. Komiyama japanese journal of applied physics vol 44 no 7b 2005, 53705373 34. Reviewed recent progress on carbon nanostructures as counter electrodes for dyesensitized solar cells. Woven electrodes for flexible organic photovoltaic cells. Bulovickong create graphene electrodes for organic solar. The hybrid solar cell devices consist of solutionprocessed poly 3,4ethlenedioxythiophene. Green and economic transparent conductive graphene electrode. Energy sufficiency is a critical requirement for the economic prosperity of modern countries. Metalorganic framework derived hybrid co3o4carbon porous.

Graphene is transparent, so that electrodes made from it can be applied to the transparent organic solar cells without blocking any of the incoming light. Nam gyu park high efficiency, stable, large area perovskite solar cells r 305 a. The device combines lowcost organic carboncontaining materials with electrodes of graphene, a flexible, transparent material made from inexpensive, abundant carbon sources. Pdf doped graphene electrodes for organic solar cells. Semitransparent flexible organic solar cells employing dopedgraphene layers as anode and cathode electrodes. Can graphene outperform indium tin oxide as transparent. Organic solar cells with graphene electrodes and vapor printed poly3,4 ethylenedioxythiophene as the hole. Graphenebased materials for energy applications jun liu, yuhua xue, mei zhang, and liming dai accelerating global energy consumption makes the development of clean and renewable alternative energy sources indispensable. Pss has recently attracted intensive attention in thermoelectric conversion because of its low cost and low thermal conductivity as well as. Files available from the acs website may be downloaded for. Once the stacked graphene chips were prepared, a mixture of poly 3,4ethylenedioxythiophene poly styrene sulfonate pedot. The oxide films obtained at low niso4 concentration showed the highest photocurrent values under monochromatic.

Cold isostaticpressured silver nanowire electrodes for flexible organic solar cells via roomtemperature processes. Semitransparent flexible organic solar cells employing doped. In addition, it is flexible, like the organic solar cells themselves, so it could be part of installations that require the panel to follow the contours of a structure, such as a patterned roof. Files available from the acs website may be downloaded for personal use only. Boosting sodiumion battery performance via selfassembly of a titaniagraphene anode 30 visualizing degradation in lithiumion batteries 32 an abundant and inexpensive alternative for energy storage in liion batteries 34 the variables controlling thinfilm structure in organic solar cells 36 watching fuelcell catalysts in action 38. Two key problems have slowed the wholesale adoption of graphene electrodes. Over 14% efficiency foldingflexible itofree organic solar. Biosensors the flexurefet biosensor to break the fundamental sensitivity limits of nanobiosensors using nonlinear electromechanical, a. Synergetic electrode architecture for efficient graphene.

The ngfs can be utilized as an excellent counter electrode in hole transport material htmfree perovskite solar cells pscs, achieving. Graphenebased organic lightemitting diodes oleds have recently emerged as a key element essential in nextgeneration displays and lighting, mainly due to their promise for highly flexible. The jv characteristics of the two types of silicon solar cells are reported in supplemental information, while those of twoterminal perovskitesilicon tandem solar cells before graphene addition in mesoscopic perovskite top cells are shown in figures 4a and 4b. Metalelectrodefree windowlike organic solar cells with pdoped carbon nanotube thinfilm electrodes il jeon1, clement delacou2, antti kaskela3, esko i. Semitransparent invertedtype polymer solar cells, with the structure of ito. Free flexible organic solar cells with graphene top. Highly flexible, highperformance perovskite solar cells with. Here, expensive metal top electrodes were replaced with highperformance, easytotransfer, aerosolsynthesized carbon nanotubes to produce transparent organic solar cells. The middle layer, a mere 200 nanometers thick, is a jumble of nanorods embedded in the semi conducting polymer. Study of organic solar cells based on functional materials. Jun 15, 2017 imagine a future in which solar cells are all around uson windows and walls, cell phones, laptops, and more. Ndoped graphene nanoplatelets as superior metalfree.

Organic solar cells based on graphene derivatives and. Efficient harnessing of solar energy using technologies such as the dyesensitized solar cell could solve the energy problem which persistently plagues developing countries. Graphene based organic lightemitting diodes oleds have recently emerged as a key element essential in nextgeneration displays and lighting, mainly due to their promise for highly flexible. New market trend for organic solar cell osc require lightweight, cost effective, environmentally friendly and flexible. The resulting material, possessing a high surface area of 251 m2 g1 and a large carbon content of 52. First use of graphene transparent conductive electrodes doped with graphene quantum dotsmixed silver nanowires.

An interaction between the redox mediator, disulfidethiolate t2t. Carrier doping of graphene is one of the most challenging issues that needs to be solved to enable its use in various applications. Despite having a simple operational procedure and modest power conversion efficiency of. Visiblytransparent organic solar cells on flexible substrates with allgraphene electrodes. Junying wang institute of coal chemistry, chinese academy of sciences, china o cosynthesis of atomic fe and fewlayer graphene towards superior electrocatalysts of.

Graphene electrodes for organic solar cells researchers identify technique that could make a new kind of solar photovoltaic panel practical nanotechnology, hyesung park et al 2010 nanotechnology 21 505204. Microwave exposure as a fast and costeffective alternative of oxygen plasma treatment of indiumtin oxide electrode for application in organic solar cells anastasia soultati, ioannis kostis, giorgos. Ultrathin organic solar cells with graphene doped by. Jun 25, 20 n doped graphene nanoplatelets as superior metalfree counter electrodes for organic dyesensitized solar cells. F high efficiency graphene solar cells by chemical doping.

Ndoped graphene nanoplatelets as superior metalfree counter electrodes for organic dyesensitized solar cells. Graphene transparent conductive electrodes doped with. Organic semiconductor solar cells are a promising route to scalable, economically viable, energy conversion technologies due to the potential for developme. While organic solar cells have been promising an inexpensive way to exploit solar.

Pcbm using chemically doped graphene electrodes sangchul lee, junseok yeo, yongsung ji et al. Graphene electrodes could replace indium tin oxide for lower. Metal sulphides and their carbon supported composites as platinumfree counter electrodes in dyesensitized solar cells. Nitrogen doped graphene for dyesensitized solar cells and the role of nitrogen states in triiodide reduction.

Graphene nanoplatelets doped with n at its edges as metal. The solar cells based on graphene electrodes, especially those doped with hno 3, have comparable performance. In order to verify the generality of our method, we have also tested organic inorganic hybrid solar cells 49,50,51 and quantumdot based solar cells 52,53, all using graphene electrodes and the. Highly efficient counter electrodes ces for dyesensitized solar cells dsscs were developed using thin films of scalable and highquality, nitrogen doped graphene nanoplatelets ngnp, which was synthesized by a simple twostep reaction sequence. We report semitransparent and flexible organic solar cells foscs with high aperture, composed of doped graphene layers, zno, p3ht. Radicalassisted chemical doping for chemically derived. For instance, organic dyes, which avoid the use of rare earth. In addition to organic solvent and surfactantbased liquidphase exfoliation. Estimation of the depth to the freshwatersaltwater interface from vertical head gradients in wells in coastal and island aquifers. Over 14% efficiency foldingflexible itofree organic.

Electrocatalytic activity of disulfidethiolate with. The ptype doped graphene schottky junction solar cells showed efficiency up to. Woven electrodes for flexible organic photovoltaic cells article in advanced materials 238. Metalelectrodefree windowlike organic solar cells with p. Doped graphene electrodes for organic solar cells article pdf available in nanotechnology 2150. Tfsa doped interlayer for efficient organic solar cells.

Nitrogendoped graphene for dyesensitized solar cells and the role of nitrogen states in triiodide reduction. Interface engineering of graphene for universal applications. Development of annealingfree, solutionprocessable inverted organic solar cells with n doped graphene electrodes using zinc oxide nanoparticles. Perovskite solar cells pscs, for use in superior photovoltaic pv devices with a high power conversion efficiency pce and low cost in thirdgeneration pv technologies, have undergone rapid progress during the last decade as a result of their numerous advantages including low density, and flexibility, as well as costeffective production 15 lee mm, teuscher j, miyasaka. Semitransparent flexible photovoltaic cells are advantageous for effective use of solar energy in many areas such as buildingintegrated solarpower generation and portable photovoltaic chargers. Pdf graphene, a material composed of oneatomthick planar sheets of sp 2 bonded. Fotakis, c spin coated graphene films as the transparent electrode in organic photovoltaic devices. We report the successful growth of nico2s4 nanosheet films converted from nico2o4 nanosheet films on fluorinedoped tin oxide substrates by a lowtemperature solution process. Graphene has been employed as transparent electrodes in organic solar cells oscs because of its good physical and optical properties. Doped and textured graphene as electrode for organic solar cells. Doped graphene electrodes for organic solar cells iopscience.

Kim k1, bae sh, toh ct, kim h, cho jh, whang d, lee tw, ozyilmaz b, ahn jh. Stability enhancement via low temperature atomic layer deposition for perovskite solar cells ekyu han korea electronic technology institute, republic of korea. Graphene electrodes for organic solar cells 6 january 2011, by david l. Replacing indiumtinoxide as the material for electrodes in organic solar cells provides a number of benefits. Graphene, a material composed of oneatomthick planar sheets of sp 2 bonded carbon atoms with a twodimensional honeycomb structure, has been proposed for many applications due to its remarkable electronic, optical, thermal, and mechanical properties. Kelvin probe force microscopy study of conjugated polymerfullerene organic solar cells t. The carbon nanotubes were pdoped by two new methods. To date, graphene electrodes have been applied for different types of solar cells, namely. Deposition methods of graphene as electrode material for organic solar cells. Polymer solar cells pscs are apparently becoming one of the leading technologies to. Carbon nanostructure counter electrodes for low cost and stable dyesensitized solar cells. Graphene for electrodes in organic solar cells could reduce costs. A promising approach for making solar cells that are inexpensive, lightweight and flexible is to use organic that is, carboncontaining compounds instead of expensive, highly purified silicon.

We developed a carrier doping method using radicalassisted conjugated organic molecules in the liquid phase and demonstrated allwet fabrication process of doped graphene films without any vacuum process. Emmotta,n, antonio urbinaa,b, jenny nelsona a department of physics and grantham institute for climate change, imperial college london, london sw7 2az, united kingdom. Intercalated metalorganic framework negative electrodes for lithiumion batteries achieving safety and high. Organic semiconductor solar cells oscs have recently experienced an impressive improvement in power conversion ef. We report semitransparent and flexible organic solar cells foscs with high. Ndoped graphene nanoplatelets as superior metalfree counter. Schottky junction solar cells fabricated with tfsa doped graphene have exhibited a pce of 8. Hyesung park 1, jill a rowehl 2, ki kang kim 1, vladimir bulovic 1 and jing kong 1. Mechanically stacked, twoterminal graphenebased perovskite.

Semitransparent flexible photovoltaic cells are advantageous for effective use of solar energy in many areas such as buildingintegrated solar power generation and portable photovoltaic chargers. Semitransparent flexible organic solar cells employing. The photovoltaic part was similar to the normal polymer solar cells, except in a wire format. Hybrid porous nanowire arrays composed of strongly interacting co3o4 and carbon were prepared by a facile carbonization of the metalorganic framework grown on cu foil. Efficient ptype dyesensitized solar cells with allnano. Doped graphene electrodes for organic solar cells this article has been downloaded from iopscience. A new flexible, transparent solar cell developed at mit brings that future one step closer. Lowcost nico2s4 and nico2o4 nanosheet films were directly used for replacing conventional pt and nio as counter electrodes and photocathodes, respectively, to construct allnano ptype dyesensitized solar. Compared with organic dyes, semiconductor quantum dots qds exhibit several appealing advantages for application in solar cells.

Nitrogendoped graphene ngr was utilized in dyesensitized solar cells for energy harvesting. An analysis of how to use graphene as an electrode for such solar cells was published on dec. Pss layer and a donoracceptor blend layer commonly composed of p3ht or fullerenes or both. Facile synthesis of nitrogendoped graphene frameworks for. Pdf graphene as transparent electrodes for solar cells. Graphene electrodes for organic solar cells mit news. Upconverting nanophosphor incorporated photoanodes for. Graphene quantum dots enhance the powerconversion efficiency of organic solar cells to 3. This methodology is being applied along the full research cycle to produce six research outputs in the photovoltaic pv field. In the last years a large number of academic groups and industrial companies have started research programs aiming to achieve ef.

Jan 06, 2011 graphene is transparent, so that electrodes made from it can be applied to the transparent organic solar cells without blocking any of the incoming light. The effect of doping and layer thickness of graphene on pce was also included. Tailored synthesis of znn codoped porous moc nanosheets towards efficient hydrogen evolution dehua zheng qingdao university of science and technology, china pp10. Transparent methods, figures s1s10, and tables s1 and s2. Photostability of waterdispersible cdte quantum dots. Graphene and carbonnanotubebased transparent electrodes for. However, the electrical conductivity of graphene films synthesized by chemical vapor deposition cvd is still inferior to that of conventional indium tin oxide ito electrodes of comparable transparency, resulting in a lower performance of oscs. Transistors are predicted to start the commercial success of the graphene story, followed by spin valves, flexible displays, rf tags, ultralight batteries, solar cells, ultrafast lasers, composite materials, and prostheses. Pss clevios ph was spincoated on the graphene layer at 500 rpm and 3,000 rpm for 15 and 30 s respectively, to obtain 50 nm of hole injection layer hil. Graphene synthesis and application for solar cells journal of. Its high transparency, conductivity, flexibility, and abundance make it an excellent material to be applied in the field of organic. Graphene applications in other types of solar cells 6343 7. Metal sulfide nanosheetnitrogendoped graphene hybrids as lowcost counter.