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Title: Lead-free halide double perovskite-polymer composites for flexible X-ray imaging

Abstract

X-ray detectors are demonstrated using composite films of lead-free Cs 2AgBiBr 6 halide double perovskite embedded in a polymer matrix as the X-ray photoconductors. Polymers with hydroxyl functional groups greatly improve the uniformity of the composite films, and large area dense films are obtained using a simple drop-casting process. X-ray detectors based on the composite films exhibit a sensitivity of 40 μC Gy air -1 cm -2, comparable to the reported sensitivity using Cs 2AgBiBr 6 single crystals. Such detectors can also tolerate a 5% tensile/compressive strain in the composite films without performance degradation. Pixelated X-ray detectors fabricated on the same composite film can realize X-ray imaging and resolve a proof-of-concept geometric pattern.

Authors:
 [1];  [1];  [2];  [1];  [1];  [1]; ORCiD logo [3];  [1]
  1. Florida State Univ., Tallahassee, FL (United States)
  2. Florida State Univ., Tallahassee, FL (United States); National High Magnetic Field Lab, Tallahassee, FL (United States)
  3. Oak Ridge National Lab. (ORNL), Oak Ridge, TN (United States)
Publication Date:
Research Org.:
Oak Ridge National Lab. (ORNL), Oak Ridge, TN (United States)
Sponsoring Org.:
USDOE Office of Science (SC), Basic Energy Sciences (BES) (SC-22)
OSTI Identifier:
1526389
Grant/Contract Number:  
AC05-00OR22725
Resource Type:
Accepted Manuscript
Journal Name:
Journal of Materials Chemistry C
Additional Journal Information:
Journal Volume: 6; Journal Issue: 44; Journal ID: ISSN 2050-7526
Publisher:
Royal Society of Chemistry
Country of Publication:
United States
Language:
English
Subject:
36 MATERIALS SCIENCE

Citation Formats

Lin, Haoran, Shan, Xin, Neu, Jennifer, Geske, Thomas, Davis, Melissa, Mao, Pengsu, Xiao, Kai, and Yu, Zhibin. Lead-free halide double perovskite-polymer composites for flexible X-ray imaging. United States: N. p., 2018. Web. doi:10.1039/C8TC01564C.
Lin, Haoran, Shan, Xin, Neu, Jennifer, Geske, Thomas, Davis, Melissa, Mao, Pengsu, Xiao, Kai, & Yu, Zhibin. Lead-free halide double perovskite-polymer composites for flexible X-ray imaging. United States. doi:10.1039/C8TC01564C.
Lin, Haoran, Shan, Xin, Neu, Jennifer, Geske, Thomas, Davis, Melissa, Mao, Pengsu, Xiao, Kai, and Yu, Zhibin. Tue . "Lead-free halide double perovskite-polymer composites for flexible X-ray imaging". United States. doi:10.1039/C8TC01564C. https://www.osti.gov/servlets/purl/1526389.
@article{osti_1526389,
title = {Lead-free halide double perovskite-polymer composites for flexible X-ray imaging},
author = {Lin, Haoran and Shan, Xin and Neu, Jennifer and Geske, Thomas and Davis, Melissa and Mao, Pengsu and Xiao, Kai and Yu, Zhibin},
abstractNote = {X-ray detectors are demonstrated using composite films of lead-free Cs2AgBiBr6 halide double perovskite embedded in a polymer matrix as the X-ray photoconductors. Polymers with hydroxyl functional groups greatly improve the uniformity of the composite films, and large area dense films are obtained using a simple drop-casting process. X-ray detectors based on the composite films exhibit a sensitivity of 40 μC Gyair-1 cm-2, comparable to the reported sensitivity using Cs2AgBiBr6 single crystals. Such detectors can also tolerate a 5% tensile/compressive strain in the composite films without performance degradation. Pixelated X-ray detectors fabricated on the same composite film can realize X-ray imaging and resolve a proof-of-concept geometric pattern.},
doi = {10.1039/C8TC01564C},
journal = {Journal of Materials Chemistry C},
number = 44,
volume = 6,
place = {United States},
year = {2018},
month = {8}
}

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