Title :
Twin boundaries enhanced current transport in 14.4%-efficient CdTe solar cells by RF sputtering
Author :
Hui Li;Xiangxin Liu; Zhongming Du; Biao Yang
Author_Institution :
The Key Laboratory of Solar Thermal Energy and Photovoltaic System, Institute of Electrical Engineering, Chinese Academy of Sciences, Beijing 100190, China
fDate :
6/1/2015 12:00:00 AM
Abstract :
In this paper, we are reporting a radio-frequency (rf) sputtered CdTe solar cell on soda lime glass (SLG) with 14.4% efficiency. {111} Σ3 twin boundaries (TBs) are found in this solar cell and are directly found to be electrically beneficial to the device performance, as confirmed by conductive atomic force microscopy. TBs are observed to be preferred paths for carrier transport. As indicated by scanning kelvin probe microscopy, there is potential difference between grain interior and TBs.
Keywords :
"II-VI semiconductor materials","Cadmium compounds","Radio frequency","Magnetic resonance imaging","Voltage measurement","Sputtering","Indexes"
Conference_Titel :
Photovoltaic Specialist Conference (PVSC), 2015 IEEE 42nd
DOI :
10.1109/PVSC.2015.7356438
