TY - JOUR
T1 - One-step synthesis of epitaxial 3D/2D metal halide perovskite heterostructures
AU - Zhu, Zhaohua
AU - Zeng, Shaoyu
AU - Chen, Qian
AU - Yang, Lei
AU - Wei, Cong
AU - Chen, Bo
AU - Yu, Haidong
AU - Li, Hai
AU - Zhang, Jian
AU - Huang, Xiao
PY - 2022/12/25
Y1 - 2022/12/25
N2 - Facile and scalable synthesis of perovskite heterostructures with well-controlled heterointerfaces remains challenging. Herein, we developed a simple one-step solution method to prepare 3D/2D CsPbBr3/PEA2PbBr4 perovskite heterostructures with a well-defined epitaxial structure in the gram scale. The formation mechanism was detailed by using in situ time-resolved photoluminescence (PL) spectroscopy analysis. In addition, a series of 3D/2D epitaxial heterostructures were also prepared by changing the organic cations or halogen anions. Due to the effective charge separation and transfer, photodetectors based on the type-II 3D/2D CsPbBr3/PEA2PbBr4 heterostructures showed up to 120 times higher photoresponsivities and 50 times higher on/off ratios compared to devices based on single component perovskites.
AB - Facile and scalable synthesis of perovskite heterostructures with well-controlled heterointerfaces remains challenging. Herein, we developed a simple one-step solution method to prepare 3D/2D CsPbBr3/PEA2PbBr4 perovskite heterostructures with a well-defined epitaxial structure in the gram scale. The formation mechanism was detailed by using in situ time-resolved photoluminescence (PL) spectroscopy analysis. In addition, a series of 3D/2D epitaxial heterostructures were also prepared by changing the organic cations or halogen anions. Due to the effective charge separation and transfer, photodetectors based on the type-II 3D/2D CsPbBr3/PEA2PbBr4 heterostructures showed up to 120 times higher photoresponsivities and 50 times higher on/off ratios compared to devices based on single component perovskites.
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U2 - 10.1039/d2cc05150h
DO - 10.1039/d2cc05150h
M3 - RGC 21 - Publication in refereed journal
C2 - 36426914
SN - 1359-7345
VL - 58
SP - 13775
EP - 13778
JO - Chemical Communications
JF - Chemical Communications
IS - 99
ER -