期刊
NANO ENERGY
卷 11, 期 -, 页码 260-266出版社
ELSEVIER SCIENCE BV
DOI: 10.1016/j.nanoen.2014.10.032
关键词
Polycrystalline silicon; Hybrid solar cells; Surface passivations; Conjugated polymers; Bulk heterojunctions
类别
资金
- Japan Science and Technology (JST) Agency
- Leading-edge Industry Design Project of Saitama prefecture
We firstly investigated efficient poly(3,4-ethylenedioxythiophene): poly(styrenesulfonic acid) (PEDOT:PSS)/n-type polycrystalline silicon (p-Si) heterojunction solar cells fabricated by chemical mist deposition (CMD) using a high-pressure H2O-vapor-treated p-Si prior to organic film deposition. High-pressure H2O vapor treatment of the p-Si efficiently suppressed grain boundary defects and improved carrier transport at the PEDOT:PSS/p-Si interface. Furthermore, compared to spin coated devices, the CMD devices demonstrated a more uniform photovoltaic performance. The power conversion efficiency of the PEDOT:PSS/p-Si heterojunction solar cells was 9.7% with a short-circuit current density of 33.5 mA/cm(2), an open-circuit voltage of 0.54 V, and a fill factor of 0.53. These findings suggest that CMD with a negatively charged mist precursor provides uniform adhesion of PEDOT:PSS on p-Si, resulting in increased photovoltaic performance. (C) 2014 Elsevier Ltd. All rights reserved.
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