High-stability lead-free tin(II)-perovskites by A-site cation engineering and surface-passivating engineering for high-performance hybrid bulk-heterojunction photodetectors

Zhenheng Zhang, Shengyi Yang*, Muhammad Sulaman, Zhenhua Ge, Jinming Hu, Hui Peng, Libin Tang, Bingsuo Zou, Yurong Jiang

*此作品的通讯作者

科研成果: 期刊稿件文章同行评审

2 引用 (Scopus)

摘要

Tin-based perovskites have attracted more and more attention in recent years due to their non-toxic properties. However, the poor stability of Tin-based perovskites severely limits its further applications. In order to obtain more stable Tin-based perovskites, in this work, Cs ions are introduced as a precursor besides SnF2 during the synthesis of Tin-based perovskites. Further, poly(N-vinylcarbazole) (PVK) is introduced into the above perovskites to improve the separation rate of photogenerated carriers and to suppress both O2 and H2O diffusion into Tin-perovskites. Enhanced-performance Tin-based perovskite photodetectors with hybrid bulk-heterojunctions were obtained, and our experimental data showed that the responsivity and the specific detectivity of the photodetectors ITO/ZnO/FA0.9Cs0.1SnBr3:PVK/MoO3/Ag reached to 409.8 A/W and 1.23 × 1014 Jones, respectively, under 25.3 μW/cm2 405 nm illumination at − 0.2 V. In addition, the devices also show great stability, whose photocurrent decreases only slightly after its deposing in glove box for 14 days. Thus, such a kind of combing A-site cation engineering with surface-passivating engineering on hybrid bulk-heterojunction provides a facile method for high-performance Tin-perovskite photodetectors with high-stability.

源语言英语
文章编号170867
期刊Journal of Alloys and Compounds
960
DOI
出版状态已出版 - 15 10月 2023

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Zhang, Z., Yang, S., Sulaman, M., Ge, Z., Hu, J., Peng, H., Tang, L., Zou, B., & Jiang, Y. (2023). High-stability lead-free tin(II)-perovskites by A-site cation engineering and surface-passivating engineering for high-performance hybrid bulk-heterojunction photodetectors. Journal of Alloys and Compounds, 960, 文章 170867. https://doi.org/10.1016/j.jallcom.2023.170867