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Perovskite solar cells based on bottom-fused TiO2 nanocones
Peng, Guiming1,2,3; Wu, Jiamin2; Wu, Suqin1; Xu, Xueqing3; Ellis, James E.4; Xu, Gang3; Star, Alexander4; Gao, Di2
2016
发表期刊JOURNAL OF MATERIALS CHEMISTRY A
卷号4期号:4页码:1520-1530
摘要Compared to the fast electron transport in perovskite and rapid electron injection from perovskite to TiO2 nanoparticle scaffold, the slower electron transport rate in mesoporous TiO2 is reported to be a hindrance factor for power conversion efficiency. One-dimensional nanomaterials are believed to show faster carrier transport rate. In this paper, vertically aligned one-dimensional TiO2 nanocones on transparent conducting oxide were synthesized and utilized as a promising scaffold for perovskite solar cells. A simple concentration-dependent CH3NH3PbI3 seeding spin-coating method was developed to effectively improve the surface coverage at low cost. The resultant perovskite solar cells realized an average power conversion efficiency up to 11%, which is higher than that of rectangular TiO2 nanorods-based device. Besides the faster electron transport rate and slower recombination in such one-dimensional nanostructures, we attribute the superior performance of the nanocone-based device to the fact TiO2 nanocone arrays allow more CH3NH3PbI3 to deposit. By scaling up the nanocone-based devices to 1.2 cm(2), they yielded a decent average power conversion efficiency of similar to 6%. The combination of TiO2 nanocones with perovskite paves a way to take full advantage of one-dimensional nanomaterials and organic-inorganic perovskites for photovoltaic applications.
文章类型Article
WOS标题词Science & Technology ; Physical Sciences ; Technology
DOI10.1039/c5ta08375c
研究领域[WOS]Chemistry ; Energy & Fuels ; Materials Science
关键词[WOS]ORGANOMETAL HALIDE PEROVSKITES ; PLANAR HETEROJUNCTION ; SEQUENTIAL DEPOSITION ; NANOWIRE ARRAYS ; CHARGE-TRANSFER ; EFFICIENT ; CH3NH3PBI3 ; SEMICONDUCTOR ; PERFORMANCE ; LIGHT
收录类别SCI
语种英语
WOS类目Chemistry, Physical ; Energy & Fuels ; Materials Science, Multidisciplinary
WOS记录号WOS:000368837800045
引用统计
文献类型期刊论文
条目标识符http://ir.giec.ac.cn/handle/344007/11008
专题中国科学院广州能源研究所
作者单位1.Jiangxi Univ Sci & Technol, Sch Met & Chem Engn, Ganzhou 341000, Jiangxi, Peoples R China
2.Univ Pittsburgh, Dept Chem & Petr Engn, Pittsburgh, PA 15261 USA
3.Chinese Acad Sci, Guangzhou Inst Energy Convers, CAS Key Lab Renewable Energy, Guangzhou 510640, Guangdong, Peoples R China
4.Univ Pittsburgh, Dept Chem, Pittsburgh, PA 15260 USA
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Peng, Guiming,Wu, Jiamin,Wu, Suqin,et al. Perovskite solar cells based on bottom-fused TiO2 nanocones[J]. JOURNAL OF MATERIALS CHEMISTRY A,2016,4(4):1520-1530.
APA Peng, Guiming.,Wu, Jiamin.,Wu, Suqin.,Xu, Xueqing.,Ellis, James E..,...&Gao, Di.(2016).Perovskite solar cells based on bottom-fused TiO2 nanocones.JOURNAL OF MATERIALS CHEMISTRY A,4(4),1520-1530.
MLA Peng, Guiming,et al."Perovskite solar cells based on bottom-fused TiO2 nanocones".JOURNAL OF MATERIALS CHEMISTRY A 4.4(2016):1520-1530.
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