Issue 43, 2019

Monocrystalline perovskite wafers/thin films for photovoltaic and transistor applications

Abstract

High-purity monocrystalline silicon has a long history in the development of photovoltaics; so far, it has dominant applications in modern computers with its profound implementations in transistors and chips. The success of silicon has shown that monocrystalline wafers/thin films of semiconducting materials with superior electronic properties are a good platform for optoelectronic and electronic applications. Recently, the newly emerging semiconducting materials of halide perovskites (HPs) have attracted considerable attention owing to their continuing success in high-efficiency solar cells. The demonstrated optoelectronic properties of HPs indicate that it could be a promising alternative to the silicon-based semiconducting industry. However, the prerequisite of high-efficiency devices is the material accessibility of monocrystalline HPs (mono-HPs), as per the lessons learned from monocrystalline silicon. Current HPs-based technologies, in terms of research areas such as solar cells, photodetectors, light-emitting diodes (LEDs), lasers, and transistors, suffer a bottleneck in manufacturing mono-HP wafers/thin-film materials; hence, exciting results involving mono-HP devices are absent. State-of-the-art optoelectronic HP-based devices are exclusively built using polycrystalline thin films, which are limited in their performance due to issues such as grain-boundary defects, large trap density, and inhomogeneous charge transport. However, these issues can be resolved by utilizing mono-HPs. In this review, we provide in-depth analyses and discussions on the potential of mono-HPs in photovoltaics and transistor applications, and we present the remaining challenges, as well as promising research strategies, to provide a direction for future programs.

Graphical abstract: Monocrystalline perovskite wafers/thin films for photovoltaic and transistor applications

Article information

Article type
Review Article
Submitted
12 Aug. 2019
Accepted
13 Sept. 2019
First published
13 Sept. 2019

J. Mater. Chem. A, 2019,7, 24661-24690

Author version available

Monocrystalline perovskite wafers/thin films for photovoltaic and transistor applications

K. Wang, C. Wu, Y. Hou, D. Yang and S. Priya, J. Mater. Chem. A, 2019, 7, 24661 DOI: 10.1039/C9TA08823G

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