Enhanced Device Performance with Passivation of the TiO2 Surface Using a Carboxylic Acid Fullerene Monolayer for a SnPb Perovskite Solar Cell with a Normal Planar Structure

Kengo Hamada, Ryo Tanaka, Muhammad Akmal Kamarudin, Qing Shen, Satoshi Iikubo, Takashi Minemoto, Kenji Yoshino, Taro Toyoda, Tingli Ma, Dong Won Kang, Shuzi Hayase

研究成果: Contribution to journalArticle査読

3 被引用数 (Scopus)

抄録

Research on tin-lead (SnPb) perovskite solar cells (PSCs) has gained popularity in recent years because of their low band gap, which could be applied to tandem solar cells. However, most of the work is based on inverted PSCs using PEDOT:PSS as the hole-transport layer as normal-structure PSCs show lower efficiency. In this work, the reason behind the low efficiency of normal-structure SnPb PSCs is elucidated and surface passivation has been tested as a method to overcome the problem. In the case of normal PSCs, at the interface between the titania layer and SnPb perovskite, there are many carrier traps observed originating from Ti-O-Sn bonds. In order to avoid the direct contact between titania and the SnPb perovskite layer, the titania surface is passivated with carboxylic acid C60 resulting in an efficiency increase from 5.14 to 7.91%. This will provide a direction of enhancing the efficiency of the normal-structure SnPb PSCs through heterojunction engineering.

本文言語英語
ページ(範囲)17776-17782
ページ数7
ジャーナルACS Applied Materials and Interfaces
12
15
DOI
出版ステータス出版済み - 4 15 2020
外部発表はい

All Science Journal Classification (ASJC) codes

  • Materials Science(all)

フィンガープリント 「Enhanced Device Performance with Passivation of the TiO<sub>2</sub> Surface Using a Carboxylic Acid Fullerene Monolayer for a SnPb Perovskite Solar Cell with a Normal Planar Structure」の研究トピックを掘り下げます。これらがまとまってユニークなフィンガープリントを構成します。

引用スタイル