Preparation of High-Performance CsPbIBr<sub>2</sub> Photodetector via Interfacial Seed Layer Modification Strategy

Xin Shu; Yingshen Lu; Zifa Zhang; Jiaxing Kang; Xiang Yuan; Feng Hong; Run Xu; Zhongquan Ma; Fei Xu

doi:10.3788/AOS230496

Acta Optica Sinica, Volume. 43, Issue 14, 1404002(2023)

Preparation of High-Performance CsPbIBr₂ Photodetector via Interfacial Seed Layer Modification Strategy

Xin Shu¹, Yingshen Lu¹, Zifa Zhang¹, Jiaxing Kang¹, Xiang Yuan¹, Feng Hong^1,2, Run Xu^2,3, Zhongquan Ma¹, and Fei Xu^1,2、*

Author Affiliations

¹Shanghai Key Laboratory of High Temperature Superconductors, Department of Physics, Shanghai University, Shanghai 200444, China

²Zhejiang Institute of Advanced Materials, Shanghai University, Jiashan314113, Zhejiang, China

³Department of Electronic Information Materials, Shanghai University, Shanghai 200444, China

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Figures & Tables(6)

Fig. 1. Morphology and phase characterization of control and modified thick films. (a) Top-view of SEM images; (b) cross-section of SEM images; (c) XRD patterns

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Fig. 2. Optical characterization of control and modified thick films. (a) CsPbIBr₂ band structure; (b) UV-Vis absorption spectra; (c) PL spectra; (d) TRPL spectra

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Fig. 3. Photoelectric characterization of control and modified thick films. (a) I-V characteristics; (b)(c) current of control thick film changed with input optical power; (d)(e) current of 0.3 mol/L modified thick film changed with input optical power; (d) time response

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Fig. 4. Morphologies of control and 0.3 mol/L modified thick film and the on-off ratio of the devices changed with time

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Table 1. Fitting parameters of TRPL spectra in the control and modified thick films
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Table 1. Fitting parameters of TRPL spectra in the control and modified thick films
Sample $A_{1}$ $τ_{1}$ /ns $A_{2}$ $τ_{2}$ /ns $τ_{a v e}$ /ns
Control 0.66 0.53 0.34 1.29 0.95
0.1 mol/L 0.36 0.76 0.64 1.69 1.50
0.2 mol/L 0.32 0.92 0.68 3.57 3.28
0.3 mol/L 0.33 1.38 0.67 4.92 4.49
0.4 mol/L 0.48 0.40 0.52 2.28 2.02

Table 2. Performance comparison of inorganic CsPbIBr₂ photodetector using interfacial seed layer with other reports

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Table 2. Performance comparison of inorganic CsPbIBr₂ photodetector using interfacial seed layer with other reports

Device structure	Preparation environment	Response time /μs	Dark current /（10^-10 A）	On-off ratio	Stability	Ref.
FTO/TiO₂/CsPbIBr₂/carbon	Glovebox	2.07	3.12	—	—	［12］
FTO/TiO₂/Ga₂O₃/CsPbIBr₂/carbon	Glovebox	1.83	41.50	—	—	［14］
ITO/TiO₂/CsPbIBr₂/Spiro/Au	Glovebox	22.4，25.7	5826.00	—	—	［13］
FTO/CsPbIBr₂/carbon	Glovebox	1.21	20.30	—	—	［16］
ITO/CsPbIBr₂/Au	Glovebox	320，230	24.50	10³	—	［15］
Au/CsPbIBr₂/Au	Air，35%-45%RH	100，140	—	10⁴	97%，30 d	［11］
FTO/CsPbIBr₂/Au	Air，30%RH	2900，6500	—	10⁵	82%，56 d	［10］
ITO/CsPbIBr₂/Au	Air，40%-60%RH	20，21	16.00	10²	81%，70 d	［9］
Au/ITO/CsPbIBr₂/Au	Air， <90% RH	9，13	5.70	10⁴	83%，60 d	This work

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Xin Shu, Yingshen Lu, Zifa Zhang, Jiaxing Kang, Xiang Yuan, Feng Hong, Run Xu, Zhongquan Ma, Fei Xu. Preparation of High-Performance CsPbIBr₂ Photodetector via Interfacial Seed Layer Modification Strategy[J]. Acta Optica Sinica, 2023, 43(14): 1404002

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Paper Information

Category: Detectors

Received: Feb. 3, 2023

Accepted: Mar. 20, 2023

Published Online: Jul. 13, 2023

The Author Email: Fei Xu (feixu@shu.edu.cn)

DOI:10.3788/AOS230496

Topics

laser devices and laser physics

Lasers and Laser Optics

Laser physics

laser manufacturing

Instrumentation, Measurement and Metrology

Table 1. Fitting parameters of TRPL spectra in the control and modified thick films

Table 1. Fitting parameters of TRPL spectra in the control and modified thick films

Table 2. Performance comparison of inorganic CsPbIBr2 photodetector using interfacial seed layer with other reports

Table 2. Performance comparison of inorganic CsPbIBr2 photodetector using interfacial seed layer with other reports

Table 2. Performance comparison of inorganic CsPbIBr₂ photodetector using interfacial seed layer with other reports

Table 2. Performance comparison of inorganic CsPbIBr₂ photodetector using interfacial seed layer with other reports