The external light trapping using down-conversion polymer and diffuse trench reflectors
| Autor: | Hau-Vei Han, Yan Kai Zhong, Tseung-Yuen Tseng, Ming-Hsuan Kao, Sze Ming Fu, Hao-Chung Kuo, Chien-Yao Huang, Jia-Min Shieh, Albert Lin, Chang-Hong Shen, Bo-Ruei Chen, Chien-Chung Lin |
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| Rok vydání: | 2017 |
| Předmět: |
Materials science
business.industry Physics::Optics Reflector (antenna) 02 engineering and technology Trapping 021001 nanoscience & nanotechnology 01 natural sciences law.invention 010309 optics Trap (computing) Optics Solar cell efficiency law 0103 physical sciences Solar cell Trench Optoelectronics Photonics 0210 nano-technology business Computer Science::Databases Diode |
| Zdroj: | 2017 IEEE 44th Photovoltaic Specialist Conference (PVSC). |
| Popis: | External light trapping has been proposed as an alternative to internal light trapping. The advantage is that the electrical and optical characteristics can be designed separately. This enhances the degree of improvement that nano-photonics can contribute to the solar cell efficiency and J SC . In this work, we use diffuse trench reflectors with down-conversion polymer to demonstrate the concepts of a low-cost, widely applicable scheme for the external light trap. A >50% enhancement of the J SC can be observed with proper designs and configurations. The proposed external light trap can be applied to nearly all thin-film solar cell technologies since the external optical components do not affect the electrical diode characteristic of the solar cells. The efficient external light trap is attributed to the high reflectance of the disuse mirror and its wide-angle diffractions, optical confinement due to the trench reflector, and the additional short-wavelength spectral enhancement by the down-conversion mechanism. |
| Databáze: | OpenAIRE |
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