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ICCAS OpenIR  > 分子纳米结构与纳米技术实验室  > 期刊论文
题名: Tuning the Fermi-level of TiO2 mesoporous layer by lanthanum doping towards efficient perovskite solar cells
作者: Gao, Xiao-Xin1, 2; Ge, Qian-Qing2, 3; Xue, Ding-Jiang2, 3; Ding, Jie2, 3; Ma, Jing-Yuan2, 3; Chen, Yao-Xuan2, 3; Zhang, Bao1; Feng, Yaqing1; Wan, Li-Jun2, 3; Hu, Jin-Song2, 3
刊名: NANOSCALE
发表日期: 2016
卷: 8, 期:38, 页:16881-16885
收录类别: SCI
英文摘要: Tuning the band alignment is proved to be an effective way to facilitate carrier transportation and thus enhance the power conversion efficiency (PCE) of solar cells. Doping the compact layer with metal ions or modifying the interfaces among functional layers in perovskite solar cells (PSCs) can appreciably improve the PCE of PSCs. Inspired by the rare earth elemental doping of TiO2, which has witnessed the success in photocatalysis and dye-sensitized solar cells, we firstly demonstrated here that La3+ doping in the mesoporous TiO2 layer of a mesostructured PSC can tune its Fermi level and thus significantly enhance the device PCE. Systematic analysis reveals that doping La3+ into TiO2 raises the Fermi level of TiO2 through scavenging oxygen and inducing vacancies, which subsequently increases the open circuit voltage and the fill factor while reducing the series resistance of the PSC using La3+-doped TiO2 as a mesoporous layer. As a result, a PCE of 15.42% is achieved, which is appreciably higher than the PCE of a device with undoped TiO2 (12.11%).
语种: 英语
内容类型: 期刊论文
URI标识: http://ir.iccas.ac.cn/handle/121111/35465
Appears in Collections:分子纳米结构与纳米技术实验室_期刊论文

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作者单位: 1.Tianjin Univ, Sch Chem Engn & Technol, 135 Yaguan Rd, Tianjin 300350, Peoples R China
2.Chinese Acad Sci, Inst Chem, CAS Key Lab Mol Nanostruct & Nanotechnol, 2 North First St, Beijing 100190, Peoples R China
3.Univ Chinese Acad Sci, Beijing 100049, Peoples R China
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