Microsphere Light-Scattering Layer Assembled by ZnO Nanosheets for the Construction of High Efficiency (>5%) Quantum Dots Sensitized Solar Cells

Content Provider	Semantic Scholar
Author	Tian, Jianjun Lv, Lili Wang, Xuyang Fei, Chengbin Liu, Xiaoguang Zhao, Zhenxuan Wang, Yonglu Cao, Guozhong
Copyright Year	2014
Abstract	This work reported on a bilayer photoelectrode constructed by ZnO nanoparticle (NP) film and ZnO microsphere (MS) scattering layer for CdS/CdSe quantum dot cosensitized solar cells (QDSCs) with a power conversion efficiency (PCE) of greater than 5%. We controlled the growth orientations of ZnO crystals to form nanosheets, which attached together and assembled into MS due to the high surface energy of the nanosheets. MSs were used as a top layer to effectively increase the light diffuse reflection and harvesting to enhance photogenerated current. In comparison with ZnO NPs photoelectrode, the short circuit current density (Jsc) of ZnO NPs/MSs photoelectrode increased from 10.3 mA/cm2 to 16.0 mA/cm2, which was an enhancement of 55%. To further increase the fill factor and PCE of QDSCs, ZnO NPs/MSs was treated in the solution of H3BO3 and (NH4)2TiF6 to form a barrier surface layer, which suppressed the charge recombination and prolonged electron lifetime. As a result, the solar cell displayed Jsc of 17.13 mA...
Starting Page	16611
Ending Page	16617
Page Count	7
File Format	PDF HTM / HTML
DOI	10.1021/jp412525k
Volume Number	118
Alternate Webpage(s)	http://depts.washington.edu/solgel/documents/pub_docs/journal_docs/2014/JPCC-JJTian-jp412525k.pdf
Alternate Webpage(s)	https://doi.org/10.1021/jp412525k
Language	English
Access Restriction	Open
Content Type	Text
Resource Type	Article