TY - JOUR
T1 - Pyro-Phototronic Effect in n-Si/p-MoO3−x Heterojunction
T2 - an Approach to Improve the Photoresponse of the Ultraviolet Photodetector
AU - Bhatt, Vishwa
AU - Sahare, Sanjay
AU - Kumar, Manjeet
AU - Lee, Shern Long
AU - Kumar, Sunil
AU - Yun, Ju Hyung
N1 - Publisher Copyright:
© 2023 Wiley-VCH GmbH.
PY - 2023/9
Y1 - 2023/9
N2 - The pyro-phototronic effect plays a crucial role in UV photodetection to enhance the overall device performance. Herein, the pyro-phototronic effect is demonstrated for the first time in n-Si/MoO3−x heterostructures. Vertically grown 2D-MoO3−x microstructures are synthesized that show a centrosymmetric structure. Commonly, non-centrosymmetric structures show a pyroelectric polarization effect; however, in the present work, authors have shown such a synergetic effect in a centrosymmetric MoO3−x-based heterojunction. The fabricated device depicts a type I heterojunction that helps to reduce the response time and consequently minimizes charge-carrier recombination losses. UV photodetection is measured with very low power, and significant device performances are observed under varying light intensities. The maximum responsivity and detectivity are attained up to 4.4 mA W−1 and 5.5 (Formula presented.) 1010 Jones under photoelectric effects. Additionally, the maximum responsivity and detectivity are attained up to 7.82 mA W−1 and 1011 Jones under the pyro-phototronic effect. Herein, an in-depth understanding of the pyro-phototronic effect in working phenomenon in type I heterojunction is provided. Such a mechanism can be explored in different heterojunctions to enhance photodetection performance in ultrafast light communications.
AB - The pyro-phototronic effect plays a crucial role in UV photodetection to enhance the overall device performance. Herein, the pyro-phototronic effect is demonstrated for the first time in n-Si/MoO3−x heterostructures. Vertically grown 2D-MoO3−x microstructures are synthesized that show a centrosymmetric structure. Commonly, non-centrosymmetric structures show a pyroelectric polarization effect; however, in the present work, authors have shown such a synergetic effect in a centrosymmetric MoO3−x-based heterojunction. The fabricated device depicts a type I heterojunction that helps to reduce the response time and consequently minimizes charge-carrier recombination losses. UV photodetection is measured with very low power, and significant device performances are observed under varying light intensities. The maximum responsivity and detectivity are attained up to 4.4 mA W−1 and 5.5 (Formula presented.) 1010 Jones under photoelectric effects. Additionally, the maximum responsivity and detectivity are attained up to 7.82 mA W−1 and 1011 Jones under the pyro-phototronic effect. Herein, an in-depth understanding of the pyro-phototronic effect in working phenomenon in type I heterojunction is provided. Such a mechanism can be explored in different heterojunctions to enhance photodetection performance in ultrafast light communications.
KW - 2D-MoO microstructures
KW - pyro-electric effect
KW - pyro-phototronic effect
KW - type I heterojunctions
KW - UV photodetectors
UR - http://www.scopus.com/inward/record.url?scp=85151464977&partnerID=8YFLogxK
U2 - 10.1002/pssr.202200500
DO - 10.1002/pssr.202200500
M3 - Article
AN - SCOPUS:85151464977
SN - 1862-6254
VL - 17
JO - Physica Status Solidi - Rapid Research Letters
JF - Physica Status Solidi - Rapid Research Letters
IS - 9
M1 - 2200500
ER -