Synergy study on charge transport dynamics in hybrid organic solar cell: Photocurrent mapping and performance analysis under local spectrum
| Autor: | Kai Jeat Hong, Riski Titian Ginting, Wei Sea Chang, Kok-Keong Chong, Fang Sheng Lim, Chi Chin Yap, Chun Hui Tan, Hock Beng Lee, Sin Tee Tan, Mohammad Hafizuddin Hj Jumali |
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| Rok vydání: | 2018 |
| Předmět: |
Photocurrent
Materials science Organic solar cell business.industry Band gap Exciton Photovoltaic system Energy conversion efficiency General Physics and Astronomy 02 engineering and technology 010402 general chemistry 021001 nanoscience & nanotechnology 01 natural sciences 0104 chemical sciences Optoelectronics General Materials Science Nanorod 0210 nano-technology business Spectroscopy |
| Zdroj: | Current Applied Physics. 18:1564-1570 |
| ISSN: | 1567-1739 |
| Popis: | Charge transport dynamics in ZnO based inverted organic solar cell (IOSC) has been characterized with transient photocurrent spectroscopy and localised photocurrent mapping-atomic force microscopy. The value of maximum exciton generation rate was found to vary from 2.6 × 1027 m−3s−1 (Jsat = 79.7 A m−2) to 2.9 × 1027 m−3s−1 (Jsat = 90.8 A m−2) for devices with power conversion efficiency ranging from 2.03 to 2.51%. These results suggest that nanorods served as an excellent electron transporting layer that provides efficient charge transport and enhances IOSC device performance. The photovoltaic performance of OSCs with various growth times of ZnO nanorods have been analysed for a comparison between AM1.5G spectrum and local solar spectrum. The simulated PCE of all devices operating under local spectrum exhibited extensive improvement with the gain of 13.3–13.7% in which the ZnO nanorods grown at 15 min possess the highest PCE under local solar with the value of 2.82%. |
| Databáze: | OpenAIRE |
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