期刊
ADVANCED MATERIALS
卷 30, 期 28, 页码 -出版社
WILEY-V C H VERLAG GMBH
DOI: 10.1002/adma.201801935
关键词
conductive mesoporous layer; high-efficiency solar cell; nanorod array; perovskite; Sb-doped SnO2
类别
资金
- National Natural Science Foundation of China [51722204, 51772197, 51422206, 11304217, 51372159]
- National Key Basic Research Program of China [2014CB931702]
- Key University Science Research Project of Jiangsu Province [17KJA430013]
- 1000 Youth Talents Plan
- 333 High-level Talents Cultivation Project of Jiangsu Province
- Six Talents Peak Project of Jiangsu Province
- Distinguished Young Scholars Foundation by Jiangsu Science and Technology Committee [BK20140009]
- Fundamental Research Funds for the Central Universities [ZYGX2016Z004]
- Priority Academic Program Development of Jiangsu Higher Education Institutions (PAPD)
Lead halide perovskite solar cells (PSCs) with the high power conversion efficiency (PCE) typically use mesoporous metal oxide nanoparticles as the scaffold and electron-transport layers. However, the traditional mesoporous layer suffers from low electron conductivity and severe carrier recombination. Here, antimony-doped tin oxide nanorod arrays are proposed as novel transparent conductive mesoporous layers in PSCs. Such a mesoporous layer improves the electron transport as well as light utilization. To resolve the common problem of uneven growth of perovskite on rough surface, the dynamic two-step spin coating strategy is proposed to prepare highly smooth, dense, and crystallized perovskite films with micrometer-scale grains, largely reducing the carrier recombination ratio. The conductive mesoporous layer and high-quality perovskite film eventually render the PSC with a remarkable PCE of 20.1% with excellent reproducibility. These findings provide a new avenue to further design high-efficiency PSCs from the aspect of carrier transport and recombination.
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