Title :
Monolithically grown InxGa1−xAs nanowire on silicon tandem solar cells with high efficiency
Author :
Shin, Jae Cheol ; Kim, Kyou Hyun ; Hu, Hefei ; Yu, Ki Jun ; Rogers, John A. ; Jian-Min Zuo ; Li, Xiuling
Author_Institution :
Dept. of Electr. & Comput. Eng., Univ. of Illinois, Urbana, IL, USA
Abstract :
In summary, the direct 1D heteroepitaxy of ternary InXGa1-xAs NWs in a wide composition/bandgap range reported here enables monolithic tandem solar cells on Si substrate. Further improvement in energy conversion efficiency is expected due to the direct bandgap, enhanced light trapping, as well as bandgap and current matching by composition, doping, and height engineering.
Keywords :
III-V semiconductors; elemental semiconductors; gallium arsenide; indium compounds; nanowires; semiconductor quantum wires; silicon; solar cells; InXGa1-xAs; Si; current matching; direct 1D heteroepitaxy; direct bandgap; energy conversion efficiency; height engineering; light trapping; monolithic tandem solar cells; monolithically grown nanowire; silicon tandem solar cells; ternary nanowires; Photonic band gap;
Conference_Titel :
Device Research Conference (DRC), 2011 69th Annual
Conference_Location :
Santa Barbara, CA
Print_ISBN :
978-1-61284-243-1
Electronic_ISBN :
1548-3770
DOI :
10.1109/DRC.2011.5994434