期刊
SOLAR ENERGY MATERIALS AND SOLAR CELLS
卷 93, 期 5, 页码 549-551出版社
ELSEVIER SCIENCE BV
DOI: 10.1016/j.solmat.2008.11.039
关键词
Hydrogenated amorphous silicon; PbS-nanocrystals; Excimer laser crystallization; Hybrid solar cells
资金
- EPSRC
Photovoltaics between hydrogenated amorphous silicon (a-Si:H) and PbS-nanocrystals (NCs) are demonstrated. Enhanced spectral response was observed below 375 and beyond 800 nm for a-Si:H/PbS-NCs compared to a-Si:H devices using external quantum efficiency measurements (EQE). Further improvement of EQE was observed from hybrid devices fabricated using a-Si:H subjected to excimer laser crystallization (ELC). This improvement is attributed to the reduction in the a-Si:H band gap through ELC, resulting in a lower barrier for hole extraction from the PbS-NCs. Techniques discussed in this paper would be useful for the fabrication of highly efficient a-Si:H and nanocrystal based hybrid photovoltaics in future. (C) 2008 Elsevier B.V. All rights reserved.
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