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- Title
Thin Film of TiO<sub>2</sub>–ZnO Binary Mixed Nanoparticles as Electron Transport Layers in Low-Temperature Processed Perovskite Solar Cells.
- Authors
Wang, Dan; Ni, Jian; Guan, Jiayi; Zhou, Xiaojun; Zhang, Shuaiyuan; Zhang, Yaofang; Huang, Qian; Cai, Hongkun; Li, Juan; Zhang, Jianjun
- Abstract
Organic–inorganic hybrid perovskite solar cells have become one of the highly promising candidates for photovoltaic technologies because of their low processing cost, rapid-growing power conversion efficiency and easy preparation process. Electron transfer layer (ETL) plays an important role in exciton separation and charge transport for perovskite devices. A TiO2–ZnO binary mixed nanoparticle (NP) ETL, which can be prepared in low-temperature hydrothermal method, was proposed. By analyzing the XRD and SEM, the incorporation of mixed NPs thin film improved the interfacial stability of ZnO/perovskite and prevented the perovskite layer from being decomposed as compared to the pure ZnO NPs thin film. Furthermore, UV spectrum and EIS results show that TiO2–ZnO mixed NP ETL has high transmittance and maintains good electrical properties of pure ZnO NPs basically. Finally, the efficiency of perovskite device based on TiO2–ZnO mixed NP ETL was improved to 15%. Our research provides a simple way for the application of ZnO in PCSs. A TiO2–ZnO binary mixed NPs thin film was proposed as ETL for planar perovskite solar cells, which was fabricated by adding TiO2 NPs into ZnO NPs that were both synthesized by hydrothermal method in low temperature. The presence of TiO2 NPs could improve the electrical properties of ETL and stabilize the interface of ZnO/perovskite at the same time.
- Subjects
PEROVSKITE; ELECTRON transport; SOLAR cells; HYBRID solar cells; THIN films; CHARGE exchange
- Publication
NANO, 2020, Vol 15, Issue 3, pN.PAG
- ISSN
1793-2920
- Publication type
Article
- DOI
10.1142/S1793292020500368