Flexible, Printable Soft-X-Ray Detectors Based on All-Inorganic Perovskite Quantum Dots

Jingying Liu; Babar Shabbir; Chujie Wang; Tao Wan; Qingdong Ou; Pei Yu; Anton Tadich; Xuechen Jiao; Dewei Chu; Dongchen Qi; Dabing Li; Ruifeng Kan; Yamin Huang; Yemin Dong; Jacek Jasieniak; Yupeng Zhang; Qiaoliang Bao

doi:10.1002/adma.201901644

Flexible, Printable Soft-X-Ray Detectors Based on All-Inorganic Perovskite Quantum Dots

Adv Mater. 2019 Jul;31(30):e1901644. doi: 10.1002/adma.201901644. Epub 2019 Jun 6.

Authors

Jingying Liu¹, Babar Shabbir^{1

2}, Chujie Wang¹, Tao Wan³, Qingdong Ou¹, Pei Yu¹, Anton Tadich^{4

5}, Xuechen Jiao^{1

4}, Dewei Chu³, Dongchen Qi⁶, Dabing Li², Ruifeng Kan², Yamin Huang⁷, Yemin Dong⁷, Jacek Jasieniak¹, Yupeng Zhang¹, Qiaoliang Bao¹

Affiliations

¹ Department of Materials Science and Engineering, Monash University, Clayton, Victoria, 3800, Australia.
² State Key Laboratory of Applied Optics, Changchun Institute of Optics, Fine Mechanics and Physics, Chinese Academy of Sciences, Changchun, Jilin, 130033, China.
³ School of Materials Science and Engineering, University of New South Wales, Kensington, Sydney, New South Wales, 2052, Australia.
⁴ Australian Synchrotron, ANSTO, 800 Blackburn Road, Clayton, Victoria, 3168, Australia.
⁵ Department of Chemistry and Physics, La Trobe Institute for Molecular Science, La Trobe University, Melbourne, Victoria, 3086, Australia.
⁶ School of Chemistry, Physics and Mechanical Engineering, Queensland University of Technology, Brisbane, Queensland, 4001, Australia.
⁷ State Key Laboratory of Functional Materials for Informatics, Shanghai Institute of Microsystem and Information Technology, Chinese Academy of Sciences, Shanghai, 200050, China.

PMID: 31169936
DOI: 10.1002/adma.201901644

Abstract

Metal halide perovskites represent a family of the most promising materials for fascinating photovoltaic and photodetector applications due to their unique optoelectronic properties and much needed simple and low-cost fabrication process. The high atomic number (Z) of their constituents and significantly higher carrier mobility also make perovskite semiconductors suitable for the detection of ionizing radiation. By taking advantage of that, the direct detection of soft-X-ray-induced photocurrent is demonstrated in both rigid and flexible detectors based on all-inorganic halide perovskite quantum dots (QDs) synthesized via a solution process. Utilizing a synchrotron soft-X-ray beamline, high sensitivities of up to 1450 µC Gy_air ^-1 cm^-2 are achieved under an X-ray dose rate of 0.0172 mGy_air s^-1 with only 0.1 V bias voltage, which is about 70-fold more sensitive than conventional α-Se devices. Furthermore, the perovskite film is printed homogeneously on various substrates by the inexpensive inkjet printing method to demonstrate large-scale fabrication of arrays of multichannel detectors. These results suggest that the perovskite QDs are ideal candidates for the detection of soft X-rays and for large-area flat or flexible panels with tremendous application potential in multidimensional and different architectures imaging technologies.

Keywords: flexible and printable X-ray detectors; ionizing radiation; perovskites; quantum dots; soft X-rays.

Abstract

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