Abstract
Perovskite solar cells (PSCs) have developed rapidly over the past few years, and the power conversion efficiency of PSCs has exceeded 20%. Such high performance can be attributed to the unique properties of perovskite materials, such as high absorption over the visible range and long diffusion length. Due to the different diffusion lengths of holes and electrons, electron transporting materials (ETMs) used in PSCs play a critical role in PSCs performance. As an alternative to TiO2 ETM, ZnO materials have similar physical properties to TiO2 but with much higher electron mobility. In addition, there are many simple and facile methods to fabricate ZnO nanomaterials with low cost and energy consumption. This review focuses on recent developments in the use of ZnO ETM for PSCs. The fabrication methods of ZnO materials are briefly introduced. The influence of different ZnO ETMs on performance of PSCs is then reviewed. The limitations of ZnO ETM-based PSCs and some solutions to these challenges are also discussed. The review provides a systematic and comprehensive understanding of the influence of different ZnO ETMs on PSCs performance and potentially motivates further development of PSCs by extending the knowledge of ZnO-based PSCs to TiO2-based PSCs.
Original language | English |
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Article number | 1703737 |
Journal | Advanced Materials |
Volume | 30 |
Issue number | 3 |
DOIs | |
State | Published - Jan 2018 |
Bibliographical note
Publisher Copyright:© 2017 WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim
Funding
This work was supported by National Natural Science Foundation of China under Grant Nos. 61421002, 61574029, 61371046, and 61474015. This work was also partially supported by University of Kentucky.
Funders | Funder number |
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University of Kentucky | |
National Natural Science Foundation of China (NSFC) | 61574029, 61474015, 61371046, 61421002 |
Keywords
- electron transport materials
- nanostructures
- perovskite solar cells
- photovoltaics
- zinc oxide
ASJC Scopus subject areas
- General Materials Science
- Mechanics of Materials
- Mechanical Engineering