TY - JOUR
T1 - Soft X-ray Detectors Based on SnS Nanosheets for the Water Window Region
AU - Shabbir, Babar
AU - Liu, Jingying
AU - Krishnamurthi, Vaishnavi
AU - Ayyubi, R. A.W.
AU - Tran, Kevin
AU - Tawfik, Sherif Abdulkader
AU - Hossain, M. Mosarof
AU - Khan, Hareem
AU - Wu, Yingjie
AU - Shivananju, Bannur Nanjunda
AU - Sagar, Rizwan Ur Rehman
AU - Mahmood, Asif
AU - Younis, Adnan
AU - Uddin, Md Hemayet
AU - Bukhari, Syed A.
AU - Walia, Sumeet
AU - Li, Yongxiang
AU - Spencer, Michelle J.S.
AU - Mahmood, Nasir
AU - Jasieniak, Jacek J.
N1 - Publisher Copyright:
© 2021 Wiley-VCH GmbH
PY - 2022/1/14
Y1 - 2022/1/14
N2 - The structural characteristics of biological specimens, such as wet proteins and fixed living cells, can be conveniently probed in their host aqueous media using soft X-rays in the water window region (200–600 eV). Conventional X-ray detectors in this area exhibit low spatial resolution, have limited sensitivity, and require complex fabrication procedures. Here, many of these limitations are overcome by introducing a direct soft X-ray detector based on ultrathin tin mono-sulfide (SnS) nanosheets. The distinguishing characteristic of SnS is its high photon absorption efficiency in the soft X-ray region. This factor enables the fabricated soft X-ray detectors to exhibit excellent sensitivity values on the order of (Formula presented.) at peak energies of ≈600 eV. The peak signal is found to be sensitive to the number of stacked SnS layers, with thicker SnS nanosheet assemblies yielding a peak response at higher energies and with peak sensitives of over 2.5 (Formula presented.) at 1 V. Detailed current–voltage and temporal characteristics of these detectors are also presented. These results showcase the excellent performance of SnS nanosheet-based soft X-ray detectors compared to existing direct soft X-ray detectors, including that of the emerging organic–inorganic perovskite class of materials.
AB - The structural characteristics of biological specimens, such as wet proteins and fixed living cells, can be conveniently probed in their host aqueous media using soft X-rays in the water window region (200–600 eV). Conventional X-ray detectors in this area exhibit low spatial resolution, have limited sensitivity, and require complex fabrication procedures. Here, many of these limitations are overcome by introducing a direct soft X-ray detector based on ultrathin tin mono-sulfide (SnS) nanosheets. The distinguishing characteristic of SnS is its high photon absorption efficiency in the soft X-ray region. This factor enables the fabricated soft X-ray detectors to exhibit excellent sensitivity values on the order of (Formula presented.) at peak energies of ≈600 eV. The peak signal is found to be sensitive to the number of stacked SnS layers, with thicker SnS nanosheet assemblies yielding a peak response at higher energies and with peak sensitives of over 2.5 (Formula presented.) at 1 V. Detailed current–voltage and temporal characteristics of these detectors are also presented. These results showcase the excellent performance of SnS nanosheet-based soft X-ray detectors compared to existing direct soft X-ray detectors, including that of the emerging organic–inorganic perovskite class of materials.
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U2 - 10.1002/adfm.202105038
DO - 10.1002/adfm.202105038
M3 - Article
AN - SCOPUS:85117898411
SN - 1616-301X
VL - 32
JO - Advanced Functional Materials
JF - Advanced Functional Materials
IS - 3
M1 - 2105038
ER -