A novel one-step synthesized and dopant-free hole transport material for efficient and stable perovskite solar cells

Xiaoming Zhao; Fei Zhang; Chenyi Yi; Dongqin Bi; Xiangdong Bi; Peng Wei; Jingshan Luo; Xicheng Liu; Shirong Wang; Xianggao Li; Shaik Mohammed Zakeeruddin; Michael Grätzel

doi:10.1039/C6TA05254A

A novel one-step synthesized and dopant-free hole transport material for efficient and stable perovskite solar cells†

Xiaoming Zhao,‡^ae Fei Zhang,‡^abe Chenyi Yi,^b Dongqin Bi,^b Xiangdong Bi,^c Peng Wei,^d Jingshan Luo,^b Xicheng Liu,^g Shirong Wang,*^ae Xianggao Li,^ae Shaik Mohammed Zakeeruddin*^bf and Michael Grätzel*^b

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* Corresponding authors

^a School of Chemical Engineering and Technology, Tianjin University, 300072 Tianjin, China
E-mail: wangshirong@tju.edu.cn

^b Laboratory of Photonics and Interfaces, Institute of Chemical Sciences and Engineering, École Polytechnique Fédérale de Lausanne (EPFL), Station 6 CH-1015, Lausanne, Switzerland
E-mail: michael.graetzel@epfl.ch, shaik.zakeer@epfl.ch

^c Department of Physical Sciences, Charleston Southern University, 9200 University Blvd., Charleston, SC 29485, USA

^d Affinity Research Chemicals, Inc., 9 Germay Drive, Suite 300B, Wilmington, DE 19804, USA

^e Collaborative Innovation Center of Chemical Science and Engineering (Tianjin), 300072 Tianjin, China

^f Center of Excellence for Advanced Materials Research (CEAMR), King Abdulaziz University, Jeddah, Saudi Arabia

^g Qufu Normal University, School of Chemistry and Chemical Engineering, 273165 Qufu, China

Abstract

A hole transport material ST1 was synthesized by a one-step Heck reaction. Compared to Spiro-OMeTAD, perovskite solar cells with ST1 exhibit a remarkable overall power conversion efficiency of 15.4% without the use of any dopants and additives, which is comparable to that of the devices based on doped Spiro-OMeTAD (16.3%) and present better stability during a four week aging test.

Journal of Materials Chemistry A

A novel one-step synthesized and dopant-free hole transport material for efficient and stable perovskite solar cells†

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A novel one-step synthesized and dopant-free hole transport material for efficient and stable perovskite solar cells

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