A Short Review on Interface Engineering of Perovskite Solar Cells: A Self‐Assembled Monolayer and Its Roles. Issue 2 (5th August 2019)

• Record Type: Journal Article
• Authors: Choi, Kyoungwon; Choi, Hyuntae; Min, Jihyun; Kim, Taewan; Kim, Dohyun; Son, Sung Yun; Kim, Guan-Woo; Choi, Jongmin; Park, Taiho
• Is Part Of: Solar RRL. Volume 4:Issue 2(2020)
• Page Start: n/a
• Page End: n/a
• Publication Date: 2019-08-05
• Subjects: energy-level alignment -- interface engineering -- perovskite solar cells -- self-assembled monolayers -- trap passivation; Solar energy -- Periodicals; Photovoltaic power generation -- Periodicals; Solar energy -- Research -- Periodicals; Photovoltaic power generation -- Research -- Periodicals; Periodicals; 333.7923
• DOI: 10.1002/solr.201900251
• Languages: English
• ISSNs: 2367-198X

Abstract

Abstract : Perovskite solar cells (PSCs) are considered as potential candidates for next‐generation energy harvesting due to their advantages. A classic PSC has two charge transport layers (CTLs) above and below a perovskite layer, and these CTLs largely influence charge extraction and transport. Thus, an interface inevitably forms between the CTL and perovskite layer, and if the CTL and perovskite do not form a compact contact, these interfaces can become a nonradiative recombination center, which can degrade device efficiency and stability. Accordingly, interface engineering is considered an effective way to alleviate this issue. Herein, an overview of interface engineering methods on PSCs is provided, particularly with regard to types of self‐assembled monolayers and their roles in device energy level alignment and passivation effects. Abstract : Self‐assembled monolayers (SAMs) in perovskite solar cells are summarized comprehensively herein. SAMs play significant roles such as boosting the optoelectronic properties and improving perovskite stability. An overview of SAM modification in perovskite solar cells and state‐of‐the‐art applications is provided. Finally, the remaining challenges and outlooks for future research are presented.