| Hybrid solar cells based on poly（3-hexylthiophene） and electrospun TiO2 nanofibers modified with CdS nanoparticles |
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| 作者姓名： | Shingchung Lo Zhike Liu Jinhua Li Helen Laiwa Chan Feng Yan |
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| 作者单位： | Department of Applied Physics and Materials Research Centre,The Hong Kong Polytechnic University |
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| 基金项目： | financially supported by the Research Grants Council (RGC) of Hong Kong,China (project number:PolyU5322/10E);the Hong Kong Polytechnic University (project number:A-PK07) |
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| 摘 要： | Organic–inorganic hybrid solar cells based on poly(3-hexylthiophene) and electrospun TiO2 nano bers were fabricated by solution process.The ef ciency of the device was improved by modifying CdS nanoparticles on the surface of TiO2 by electrochemical method.The CdS layer can lead to the increase of both open circuit voltage and short circuit current of the device,which are attributed to enhanced exciton dissociation and light absorption and suppressed carrier recombination by CdS at the heterojunction.However,too thick CdS layer led to increased series resistance and decreased ef ciency of the device.Therefore,the optimum condition of the CdS deposition was obtained,which increased the power conversion ef ciency of the device for about 50%.Our results indicate that the surface modi cation on the inorganic semiconductor layer is an effect way to improve the performance of the hybrid solar cells.
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| 关 键 词： | Organic solar cells TiO2 nanofiber CdS nanoparticle Surface modification |
| 收稿时间： | 8 February 2013 |
Hybrid solar cells based on poly(3hexylthiophene ) and electrospu n TiO2 nanofibers modifi ed with CdS nanoparticles |
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| Shingchung Lo,Zhike Liu,Jinhua Li,Helen Laiwa Chan,Feng Yan.Hybrid solar cells based on poly(3hexylthiophene ) and electrospu n TiO2 nanofibers modifi ed with CdS nanoparticles[J].Progress in Natural Science,2013,23(5):514-518. |
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| Authors: | Shingchung Lo Zhike Liu Jinhua Li Helen Laiwa Chan and Feng Yan |
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| Institution: | Department of Applied Physics and Materials Research Centre, The Hong Kong Polytechnic University, Hong Kong, China;Department of Applied Physics and Materials Research Centre, The Hong Kong Polytechnic University, Hong Kong, China;Department of Applied Physics and Materials Research Centre, The Hong Kong Polytechnic University, Hong Kong, China;Department of Applied Physics and Materials Research Centre, The Hong Kong Polytechnic University, Hong Kong, China;Department of Applied Physics and Materials Research Centre, The Hong Kong Polytechnic University, Hong Kong, China |
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| Abstract: | Organic–inorganic hybrid solar cells based on poly(3-hexylthiophene) and electrospun TiO2 nanofibers were fabricated by solution process. The efficiency of the device was improved by modifying CdS nanoparticles on the surface of TiO2 by electrochemical method. The CdS layer can lead to the increase of both open circuit voltage and short circuit current of the device, which are attributed to enhanced exciton dissociation and light absorption and suppressed carrier recombination by CdS at the heterojunction. However, too thick CdS layer led to increased series resistance and decreased efficiency of the device. Therefore, the optimum condition of the CdS deposition was obtained, which increased the power conversion efficiency of the device for about 50%. Our results indicate that the surface modification on the inorganic semiconductor layer is an effect way to improve the performance of the hybrid solar cells. |
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| Keywords: | Organic solar cells TiO
2
nano fi ber CdS nanoparticle Surface modification |
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