title: Magnesium-doped Zinc Oxide as Electron Selective Contact Layers for Efficient Perovskite Solar Cells.
abstract: The electron-selective contact layer (ESL) in organometal halide-based perovskite solar cells (PSCs) determines not only the power conversion efficiency (PCE) but also the thermostability of PSCs. To improve the thermostability of ZnO-based PSCs, we developed Mg-doped ZnO [Zn1-xMgxO (ZMO)] as a high optical transmittance ESL for the methylammonium lead trihalide perovskite absorber [CH3NH3PbI3]. We further investigated the optical and electrical properties of the ESL films with Mg contents of 0-30 mol % and the corresponding devices. We achieved a maximum PCE of 16.5 % with improved thermal stability of CH3NH3PbI3on ESL with the optimal ZMO (0.4 m) containing 10 mol % Mg. Moreover, this optimized ZMO PSC exhibited significantly improved durability and photostability owing to the improved chemical/photochemical stability of the wider optical bandgap ZMO.
authors: State Key Laboratory of Supramolecular Structure and Materials, Jilin University, Changchun, 130012, PR China.
authors: Jiaxing
authors: J
authors: Song
authors: Key Laboratory of Physics and Technology for Advanced Batteries, Ministry of Education, College of Physics, Jilin University, Changchun, 130012, PR China.
authors: Enqiang
authors: E
authors: Zheng
authors: State Key Laboratory of Supramolecular Structure and Materials, Jilin University, Changchun, 130012, PR China.
authors: Leijing
authors: L
authors: Liu
authors: Key Laboratory of Physics and Technology for Advanced Batteries, Ministry of Education, College of Physics, Jilin University, Changchun, 130012, PR China. xf_wang@jlu.edu.cn.
authors: Xiao-Feng
authors: XF
authors: Wang
authors: Key Laboratory of Physics and Technology for Advanced Batteries, Ministry of Education, College of Physics, Jilin University, Changchun, 130012, PR China.
authors: Gang
authors: G
authors: Chen
authors: State Key Laboratory of Supramolecular Structure and Materials, Jilin University, Changchun, 130012, PR China. wjtian@jlu.edu.cn.|Key Laboratory of Physics and Technology for Advanced Batteries, Ministry of Education, College of Physics, Jilin University, Changchun, 130012, PR China. wjtian@jlu.edu.cn.
authors: Wenjing
authors: W
authors: Tian
authors: Graduate School of Engineering, Toin University of Yokohama, 1614 Kurogane-cho, Aoba, Yokohama, Kanagawa, 225-8503, Japan.
authors: Tsutomu
authors: T
authors: Miyasaka
mesh_terms: D017610:Calcium Compounds / Q000737:chemistry*; D004355:Drug Stability; D011211:Electric Power Supplies; D008274:Magnesium / Q000737:chemistry*; D010087:Oxides / Q000737:chemistry*; D012993:Solar Energy; D013696:Temperature; D014025:Titanium / Q000737:chemistry*; D015034:Zinc Oxide / Q000737:chemistry*
chemical_list: D017610:Calcium Compounds; D010087:Oxides; C059910:perovskite; D014025:Titanium; D008274:Magnesium; D015034:Zinc Oxide
keywords: electron-selective contact; perovskite; solar cells; thermostability; zinc oxide