New 2D Materials for Highly Efficient Perovskite Solar Cells
Zhanglin Guo a, Zhenhua Xu a, Tingli Ma a
a Graduate School of Life Science and Systems Engineering, Kyushu Institute of Technology, Kitakyushu, 808-0196, Japan
Asia-Pacific International Conference on Perovskite, Organic Photovoltaics and Optoelectronics
Proceedings of International Conference on Perovskite and Organic Photovoltaics and Optoelectronics (IPEROP19)
Kyōto-shi, Japan, 2019 January 27th - 29th
Organizers: Hideo Ohkita, Atsushi Wakamiya and Mohammad Nazeeruddin
Oral, Tingli Ma, presentation 077
DOI: https://doi.org/10.29363/nanoge.iperop.2019.077
Publication date: 23rd October 2018

Perovskite solar cells (PSCs) have attracted much attention due to their high-energy conversion efficiency and low production cost. However, the problems of stability and toxicity for PSCs are still unresolved.

Recently, MXene, a newly intriguing family of two-dimensional (2D) materials, have recently attracted considerable attention owing to their excellent properties such as high electrical conductivity and mobility, tunable structure and termination groups. In this work, the Ti3C2TxMXene is incorporated into the perovskite absorber layer for the first time, which aims for enhancement of efficiency and stability. Results show that the termination groups of the 2D materials can retard the crystallization rate, thereby increasing the crystal size of MAPbI3. We found that the high electrical conductivity and mobility of MXene can accelerate the charge transfer. After optimizing the key parameters, 12% enhancement in device performance is achieved by adding the MXene. We also used MXene as back electrode to replace the Au electrode. The obtained perovskite solar cell showed good performance. The results will also be presented. These works unlock opportunities for the use of MXene as potential materials in PSCs applications.

References:

[1] Z. Guo, L. Gao, Z. Xue, S, Teo, . Y. Kamada, T. Ma, Small, in press, 2018.

[2] K. Wang, Y. Shi, Q. Dong, Y. Li, S. Wang, X. Yu, M. Wu, T. Ma, J. Phys. Chem. Lett. 2015, 6, 755.

[2] K. Wang, Y. Shi, Y. Li, S. Wang, X. Yu, M. Wu, T. Ma, Adv. Mater 2016. 28, 1891–1897

This work was supported by the Grant-in-Aid for Scientific Research (KAKENHI) program, Japan (C, Grant Number 15K05597) and Takahashi Industrial and Economic Research Foundation (Takahashi Grant Number 06-003-154). 

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