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http://dx.doi.org/10.4313/JKEM.2017.30.2.115

Advances in Absorbers and Reflectors of Amorphous Silicon Oxide Thin Film Solar Cells for Tandem Devices  

Kang, Dong-Won (Department of Solar & Energy Engineering, Cheongju University)
Publication Information
Journal of the Korean Institute of Electrical and Electronic Material Engineers / v.30, no.2, 2017 , pp. 115-118 More about this Journal
Abstract
Highly photosensitive and wide bandgap amorphous silicon oxide (a-$SiO_x$:H) films were developed at low temperature ranges ($100{\sim}150^{\circ}C$) with employing plasma-enhanced chemical vapor deposition by optimizing $H_2/SiH_4$ gas ratio and $CO_2$ flow. Photosensitivity more than $10^5$ and wide bandgap (1.81~1.85 eV) properties were used for making the a-$SiO_x$:H thin film solar cells, which exhibited a high open circuit voltage of 0.987 V at the substrate temperature of $100^{\circ}C$. In addition, a power conversion efficiency of 6.87% for the cell could be improved up to 7.77% by employing a new n-type nc-$SiO_x$:H/ZnO:Al/Ag triple back-reflector that offers better short circuit currents in the thin film photovoltaic devices.
Keywords
Amorphous silicon oxide; Solar cell; Low temperature; Al-doped ZnO; Back-reflector;
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