Engineering ultrafast charge transfer in a bismuthene/perovskite nanohybrid

Yingwei Wang; Keqiang Chen; Huang Hao; Guannan Yu; Bowen Zeng; Hui Wang; Feng Zhang; Leiming Wu; Jianqing Li; Si Xiao; Jun He; Yupeng Zhang; Han Zhang

doi:10.1039/C9NR00058E

Engineering ultrafast charge transfer in a bismuthene/perovskite nanohybrid†

Yingwei Wang,

‡^a Keqiang Chen,

‡^a Huang Hao,

^a Guannan Yu,^a Bowen Zeng,^b Hui Wang,^b Feng Zhang,^a Leiming Wu,

^c Jianqing Li,^c Si Xiao,

^b Jun He,^b Yupeng Zhang

*^a and Han Zhang

*^a

Author affiliations

* Corresponding authors

^a Key Laboratory of Optoelectronic Devices and Systems of Ministry of Education and Guangdong Province, College of Electronic Science and Technology and college of optoelectronic Engineering, Shenzhen University, Shenzhen 518060, People's Republic of China
E-mail: ypzhang@szu.edu.cn, hzhang@szu.edu.cn

^b Institute of Super-Microstructure and Ultrafast Process in Advanced Materials, School of Physics and Electronics, Central South University, 932 South Lushan Road, Changsha, Hunan 410083, People's Republic of China

^c Faculty of Information Technology, Macau University of Science and Technology, Macao 519020, P. R. China

Abstract

In this work, 0-dimensional (0D) CsPbBr₃ QDs were integrated with 2D bismuthene having ultrafast carrier mobility, to obtain a 0D/2D nanohybrid. Moreover, an excellent charge transfer efficiency (0.53) and an appreciable quenching constant of 2.3 × 10⁵ M⁻¹ were observed. Tuning the ratio of bismuthene in the Bi/perovskite nanohybrid achieved the quantified control of charge transfer efficiency and quenching performance at the interface.

This article is part of the themed collection: Halide Perovskite Nanocrystals

Nanoscale

Engineering ultrafast charge transfer in a bismuthene/perovskite nanohybrid†

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Engineering ultrafast charge transfer in a bismuthene/perovskite nanohybrid

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