Generic placeholder image

Current Chinese Science

Editor-in-Chief

ISSN (Print): 2210-2981
ISSN (Online): 2210-2914

Research Article Section: Biosensor

A 405 nm Photodetector Based on the CsPbBr3-CsPb2Br5 Compound Thin Film

Author(s): Qingshuang Xie*, Xing Liu and Lin Guan

Volume 3, Issue 2, 2023

Published on: 14 October, 2022

Page: [117 - 122] Pages: 6

DOI: 10.2174/2210298102666220909113827

Abstract

Aims: This work reports a 405 nm photodetector based on the thermal evaporated CsPbBr3-CsPb2Br5 compound thin film.

Background: The post-annealing process of the CsPbBr3-CsPb2Br5 compound thin film prepared by the thermal evaporation method has been improved in this work. To enhance the crystallization and photoresponse properties of the thin films, dimethyl sulfoxide (DMSO) steam was used in the postannealing process instead of using the previous way that increased the annealing temperature.

Methods: The CsPbBr3-CsPb2Br5 compound powder was deposited directly on the surface glass substrate by thermal evaporation to form the CsPbBr3-CsPb2Br5 compound thin film. The thin films were post-annealed at 150°C for 15 min to crystallize. The DMSO liquid was dropped on the substrate; the liquid would then evaporate completely, leading to the formation of DMSO steam during 150°C post-annealing. The DMSO steam would cover the thin film completely, assisting with crystallization. Finally, the gold electrodes were deposited on the surface of thin films with a conductive channel of 1 mm´ 100 mm.

Results: Results showed the crystalline quality of the thin film after DMSO steam annealing to be greatly improved compared to that of the thin film without DMSO steam annealing. The energy gap was between 2.355 eV and 2.293 eV, which was similar to a previous report. In addition, under 405 nm excitation, the photocurrent of the thin film annealed in DMSO steam showed a rapid response (35 ms), good dependence of photocurrent on light radiation power, and improved responsivity. Especially, the responsivity at 3 V bias of the thin film annealed in DMSO steam increased to 1.5 times that of the thin film without DMSO steam annealing and even 4.5 times that of as-deposited film.

Conclusion: A 405 nm photodetector based on the thermal evaporated CsPbBr3-CsPb2Br5 compound thin film was prepared successfully. The newest report has shown improved preparation process of CsPbBr3-CsPb2Br5 compound thin films, where low annealing temperature with the DMSO steam-assisted post-annealing process was used. The thin film annealed in DMSO steam was found to possess high crystalline quality and enhanced photoresponse performance, compared to thin film without DMSO steam annealing.

Keywords: Photodetector, CsPbBr3-CsPb2Br5 thin film, DMSO steam annealing, thermal evaporation, annealing temperature, photoresponse performance.

Graphical Abstract
[1]
Li, J.; Gao, R.; Gao, F.; Lei, J.; Wang, H.; Wu, X.; Li, J.; Liu, H.; Hua, X.; Liu, S.F. Fabrication of efficient CsPbBr3 perovskite solar cells by single-source thermal evaporation. J. Alloys Compd., 2020, 818, 152903.
[http://dx.doi.org/10.1016/j.jallcom.2019.152903]
[2]
Yun, J.; Fan, H.; Zhang, Y.; Huang, R.; Ren, Y.; Guo, M.; An, H.; Kang, P.; Guo, H. Enhanced optical absorption and interfacial carrier separation of CsPbBr3/graphene heterostructure: Experimental and theoretical insights. ACS Appl. Mater. Interfaces, 2020, 12(2), 3086-3095.
[http://dx.doi.org/10.1021/acsami.9b13179] [PMID: 31849215]
[3]
Cao, X.; Zhang, G.; Jiang, L.; Cai, Y.; Gao, Y.; Yang, W.; He, X.; Zeng, Q.; Xing, G.; Jia, Y.; Wei, J. Water, a green solvent for fabrication of high-quality CsPbBr3 films for efficient solar cells. ACS Appl. Mater. Interfaces, 2020, 12(5), 5925-5931.
[http://dx.doi.org/10.1021/acsami.9b20376] [PMID: 31875404]
[4]
Song, P.; Qiao, B.; Song, D.; Liang, Z.; Gao, D.; Cao, J.; Shen, Z.; Xu, Z.; Zhao, S. Colour- and structure-stable CsPbBr3-CsPb2Br5 compounded quantum dots with tuneable blue and green light emission. J. Alloys Compd., 2018, 767, 98-105.
[http://dx.doi.org/10.1016/j.jallcom.2018.07.073]
[5]
Ruan, L.; Shen, W.; Wang, A.; Xiang, A.; Deng, Z. Alkyl-thiol ligand-induced shape- and crystalline phase-controlled synthesis of stable perovskite-related CsPb2Br5 nanocrystals at room temperature. J. Phys. Chem. Lett., 2017, 8(16), 3853-3860.
[http://dx.doi.org/10.1021/acs.jpclett.7b01657] [PMID: 28767244]
[6]
Zhu, B.S.; Li, H.Z.; Ge, J.; Li, H.D.; Yin, Y.C.; Wang, K.H.; Chen, C.; Yao, J.S.; Zhang, Q.; Yao, H.B. Room temperature precipitated dual phase CsPbBr3–CsPb2Br5 nanocrystals for stable perovskite light emitting diodes. Nanoscale, 2018, 10(41), 19262-19271.
[http://dx.doi.org/10.1039/C8NR06879H] [PMID: 30324957]
[7]
Jiang, G.; Guhrenz, C.; Kirch, A.; Sonntag, L.; Bauer, C.; Fan, X.; Wang, J.; Reineke, S.; Gaponik, N.; Eychmüller, A. Highly luminescent and water-resistant CsPbBr3–CsPb2Br5 perovskite nanocrystals coordinated with partially hydrolyzed poly(methyl methacrylate) and polyethylenimine. ACS Nano, 2019, 13(9), 10386-10396.
[http://dx.doi.org/10.1021/acsnano.9b04179] [PMID: 31430122]
[8]
Shen, W.; Ruan, L.; Shen, Z.; Deng, Z. Reversible light-mediated compositional and structural transitions between CsPbBr3 and CsPb2Br5 nanosheets. Chem. Commun., 2018, 54(22), 2804-2807.
[http://dx.doi.org/10.1039/C8CC00139A] [PMID: 29492497]
[9]
Balakrishnan, S.K.; Kamat, P.V. Ligand assisted transformation of cubic CsPbBr3 nanocrystals into two-dimensional CsPb2Br5 nanosheets. Chem. Mater., 2018, 30(1), 74-78.
[http://dx.doi.org/10.1021/acs.chemmater.7b04142]
[10]
Lou, S.; Zhou, Z.; Xuan, T.; Li, H.; Jiao, J.; Zhang, H.; Gautier, R.; Wang, J. Chemical transformation of lead halide perovskite into insoluble, less cytotoxic, and brightly luminescent CsPbBr3/CsPb2Br5 composite nanocrystals for cell imaging. ACS Appl. Mater. Interfaces, 2019, 11(27), 24241-24246.
[http://dx.doi.org/10.1021/acsami.9b05484] [PMID: 31245989]
[11]
Tong, G.; Li, H.; Li, D.; Zhu, Z.; Xu, E.; Li, G.; Yu, L.; Xu, J.; Jiang, Y. Dual-Phase CsPbBr3-CsPb2Br5 perovskite thin films via vapor deposition for high-performance rigid and flexible photodetectors. Small, 2018, 14(7), 1702523.
[http://dx.doi.org/10.1002/smll.201702523] [PMID: 29266759]
[12]
Li, Jitao Zhao, Hongliang; Li, Jie Photoresponse properties and energy gap of CsPbBr3-CsPb2Br5 compound thin ilm prepared by one-step thermal evaporation method. J. Mater. Sci. Mater, 2020, 31, 4956-4962.
[http://dx.doi.org/10.1007/s10854-020-03062-x]
[13]
Yang, H.; Feng, Y.; Tu, Z.; Su, K.; Fan, X.; Liu, B.; Shi, Z.; Zhang, Y.; Zhao, C.; Zhang, B. Blue emitting CsPbBr3 perovskite quantum dot inks obtained from sustained release tablets. Nano Res., 2019, 12(12), 3129-3134.
[http://dx.doi.org/10.1007/s12274-019-2566-6]
[14]
Chen, X.; Xie, Q.; Li, J. Significantly improved photoluminescence properties of ZnO thin films by lithium doping. Ceram. Int., 2020, 46(2), 2309-2316.
[http://dx.doi.org/10.1016/j.ceramint.2019.09.220]
[15]
Acharyya, P.; Pal, P.; Samanta, P.K.; Sarkar, A.; Pati, S.K.; Biswas, K. Single pot synthesis of indirect band gap 2D CsPb2Br5 nanosheets from direct band gap 3D CsPbBr3 nanocrystals and the origin of their luminescence properties. Nanoscale, 2019, 11(9), 4001-4007.
[http://dx.doi.org/10.1039/C8NR09349K] [PMID: 30768107]
[16]
Zhu, X.; Xie, Q.; Tian, H.; Zhang, M.; Gou, Z.; He, S.; Gu, P.; Wu, H.; Li, J.; Yang, D. High photoresponse sensitivity of Lithium-Doped ZnO (LZO) thin films for weak ultraviolet signal photodetector. J. Alloys Compd., 2019, 805, 309-317.
[http://dx.doi.org/10.1016/j.jallcom.2019.07.074]

© 2024 Bentham Science Publishers | Privacy Policy