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Appl. Sci. 2018, 8(2), 152;

All-Carbon Electrodes for Flexible Solar Cells

1,2,* , 4
State Key Laboratory of New Ceramics and Fine Processing, School of Materials Science and Engineering, Tsinghua University, Beijing 100084, China
Key Laboratory of Advanced Materials (MOE), School of Materials Science and Engineering, Tsinghua University, Beijing 100084, China
School of Physics and Electronic Engineering, Xinjiang Normal University, Urumqi 830046, Xinjiang Province, China
Qian Xuesen Laboratory of Space Technology, China Academy of Space Technology, Beijing 100094, China
Graduate School at Shenzhen, Tsinghua University, Shenzhen 518055, Guangdong Province, China
Authors to whom correspondence should be addressed.
Received: 16 December 2017 / Revised: 8 January 2018 / Accepted: 20 January 2018 / Published: 23 January 2018
(This article belongs to the Special Issue Nanostructured Photodetectors and Photovoltaic Devices)
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Transparent electrodes based on carbon nanomaterials have recently emerged as new alternatives to indium tin oxide (ITO) or noble metal in organic photovoltaics (OPVs) due to their attractive advantages, such as long-term stability, environmental friendliness, high conductivity, and low cost. However, it is still a challenge to apply all-carbon electrodes in OPVs. Here, we report our efforts to develop all-carbon electrodes in organic solar cells fabricated with different carbon-based materials, including carbon nanotubes (CNTs) and graphene films synthesized by chemical vapor deposition (CVD). Flexible and semitransparent solar cells with all-carbon electrodes are successfully fabricated. The best power conversion efficiency achieved for the devices with all-carbon electrodes is 0.63%, comparable to the reported performance of OPVs using pristine CVD graphene films as anodes on rigid substrates (glass). Moreover, the current densities of as-obtained devices are comparable to those assembled with all-carbon active layers and standard electrodes (e.g., ITO and metal), which indicates that the all-carbon electrodes made of CNT and graphene films are suitably effective for carrier collection and extraction. Our results present the feasibility and potential of applying all-carbon electrodes based on graphitic nanomaterials in next-generation carbon-based photovoltaics. View Full-Text
Keywords: carbon; solar cells; transparent electrodes; carbon nanotubes; graphene; thin films carbon; solar cells; transparent electrodes; carbon nanotubes; graphene; thin films

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Zhang, Z.; Lv, R.; Jia, Y.; Gan, X.; Zhu, H.; Kang, F. All-Carbon Electrodes for Flexible Solar Cells. Appl. Sci. 2018, 8, 152.

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