Enhancing the c-TiO2 based perovskite solar cell performance via modification by a serial of boronic acid derivative self-assembled monolayers

• Published in: Applied surface science 2017-11, Vol.423, p.521-527
• Main Authors: Kırbıyık, Çisem, Kara, Koray, Kara, Duygu Akın, Yiğit, Mesude Zeliha, İstanbullu, Bilal, Can, Mustafa, Sariciftci, Niyazi Serdar, Scharber, Markus, Kuş, Mahmut
• Format: Article
• Language: English
• Subjects: Anti-Solvent washing; Perovskite; Self-Assembled monolayer; Solar cell
• ISSN: 0169-4332; 1873-5584
• DOI: 10.1016/j.apsusc.2017.06.189

[Display omitted] •SAM modification enhances the performance of perovskite solar cells.•An easy and low-cost method is proposed to improve solar cell performances.•Three different boronic acid derivative SAMs were selected for modification.•The modification of c-TiO2 increased performances by each SAM molecules selected. Morphological control of MAPbI3 crystal growth is one of the most important factor to fabricate high efficient perovskite solar cells. Herein, different boronic acid derivative self-assemble monolayers were used for modification of c-TiO2 surface and controlling of interface properties between c-TiO2 and MAPbI3 layers. Pre-mixed MAPbI3 solution in GBL was deposited by spin-coating technique onto non-modified and modified c-TiO2 surfaces by selected SAMs. The 1-OMe modified c-TiO2 based solar cell shows an increase in Jsc, resulting an increase to 9.4% PCE to compare with 5.9% PCE of non-modified c-TiO2 based solar cell. With this work, we demonstrated the possibility of morphological control of perovskite layer by using simple modification method of sublayer to increase the photovoltaic characteristics of solar cells.