TY - JOUR
T1 - High-stability lead-free tin(II)-perovskites by A-site cation engineering and surface-passivating engineering for high-performance hybrid bulk-heterojunction photodetectors
AU - Zhang, Zhenheng
AU - Yang, Shengyi
AU - Sulaman, Muhammad
AU - Ge, Zhenhua
AU - Hu, Jinming
AU - Peng, Hui
AU - Tang, Libin
AU - Zou, Bingsuo
AU - Jiang, Yurong
N1 - Publisher Copyright:
© 2023 Elsevier B.V.
PY - 2023/10/15
Y1 - 2023/10/15
N2 - 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.
AB - 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.
KW - A-site cation engineering
KW - Hybrid bulk-heterojunction
KW - Photodetectors
KW - Surface-passivating engineering
KW - Tin-perovskites
UR - https://www.scopus.com/pages/publications/85161356300
U2 - 10.1016/j.jallcom.2023.170867
DO - 10.1016/j.jallcom.2023.170867
M3 - Article
AN - SCOPUS:85161356300
SN - 0925-8388
VL - 960
JO - Journal of Alloys and Compounds
JF - Journal of Alloys and Compounds
M1 - 170867
ER -