Efficient flexible perovskite solar cells and modules using a stable SnO_(2)-nanocrystal isopropanol dispersion  

作　　者：Zhiwei Su Jing Li Ruixuan Jiang Shujie Zhang Chengkai Jin Feng Ye Bingcan Ke Mengjun Zhou Jinhui Tong Hyesung Park Fuzhi Huang Yi-Bing Cheng Tongle Bu 

机构地区：[1]State Key Laboratory of Advanced Technology for Materials Synthesis and Processing,Wuhan University of Technology,Wuhan 430070,China [2]School of Material Science and Engineering,Wuhan University of Technology,Wuhan 430070,China [3]Department of Materials Science and Engineering,Graduate School of Semiconductor Materials and Devices Engineering,Graduate School of Carbon Neutrality,Low Dimensional Carbon Materials Center,Ulsan National Institute of Science and Technology,Ulsan 44919,Republic of Korea [4]Xianhu Laboratory of the Advanced Energy Science and Technology Guangdong Laboratory,Foshan 528200,China

出　　处：《Nano Research》2024年第4期2704-2711,共8页纳米研究（英文版）

基　　金：supported by the National Key Research and Development Plan(No.2019YFE0107200);the National Natural Science Foundation of China(Nos.22279099,52202292,and 52172230);Guangdong Basic and Applied Basic Research Fund(No.2021B1515120003);the NSF of Hubei Province(No.2021CFB051);the Fundamental Research Funds for the Central Universities(No.WUT:2023IVA074);the National Research Foundation of Korea(NRF)(No.2019K1A3A1A61091345).

摘　　要：The outstanding advantages of lightweight and flexibility enable flexible perovskite solar cells(PSCs)to have great application potential in mobile energy devices.Due to the low cost,low-temperature processibility,and high electron mobility,SnO_(2) nanocrystals have been widely employed as the electron transport layer in flexible PSCs.To prepare high-quality SnO_(2) layers,a monodispersed nanocrystal solution is normally used.However,the SnO_(2) nanocrystals can easily aggregate,especially after long periods of storage.Herein,we develop a green and cost-effective strategy for the synthesis of high-quality SnO_(2) nanocrystals at low temperatures by introducing small molecules of glycerol,obtaining a stable and well-dispersed SnO_(2)-nanocrystal isopropanol dispersion successfully.Due to the enhanced dispersity and super wettability of this alcohol-based SnO_(2)-nanocrystal solution,large-area smooth and dense SnO_(2) films are easily deposited on the plastic conductive substrate.Furthermore,this contributes to effective charge transfer and suppressed non-radiative recombination at the interface between the SnO_(2) and perovskite layers.As a result,a greatly enhanced power conversion efficiency(PCE)of 21.8%from 19.2%is achieved for small-area flexible PSCs.A large-area 5 cm×5 cm flexible perovskite solar mini-module with a champion PCE of 16.5%and good stability is also demonstrated via this glycerol-modified SnO_(2)-nanocrystal isopropanol dispersion approach.

关 键 词：tin oxide isopropanol dispersion colloid stability flexible perovskite solar cells 

分 类 号：TB383[一般工业技术—材料科学与工程] TM914.4[电气工程—电力电子与电力传动]