Polarization-Resolved Position-Sensitive Self-Powered Binary Photodetection in Multilayer Janus CrSBr

0581747 - ÚFCH JH 2025 RIV US eng J - Journal Article
Panda, Jaganandha - Sahu, Satyam - Haider, Golam - Thakur, Mukesh Kumar - Mosina, K. - Velický, Matěj - Vejpravová, J. - Sofer, Z. - Kalbáč, Martin
Polarization-Resolved Position-Sensitive Self-Powered Binary Photodetection in Multilayer Janus CrSBr.
ACS Applied Materials and Interfaces. Roč. 16, č. 1 (2024), s. 1033-1043. ISSN 1944-8244. E-ISSN 1944-8252
R&D Projects: GA ČR(CZ) GX20-08633X
Grant - others:AV ČR(CZ) LQ200402201
Program: Prémie Lumina quaeruntur
Institutional support: RVO:61388955
Keywords : black phosphorus * high-performance * schottky * photoluminescence * anisotropy * graphene * symmetry * optical polarization detection * Janus 2Dlayer * CrSBr * self-powered photodetector * position sensitivity
OECD category: Physical chemistry
Impact factor: 9.5, year: 2022
Method of publishing: Open access

Recent progress in polarization-resolved photodetection based on low-symmetry 2D materials has formed the basis of cutting-edge optoelectronic devices, including quantum optical communication, 3D image processing, and sensing applications. Here, we report an optical polarization-resolving photodetector (PD) fabricated from multilayer semiconducting CrSBr single crystals with high structural anisotropy. We have demonstrated self-powered photodetection due to the formation of Schottky junctions at the Au-CrSBr interfaces, which also caused the photocurrent to display a position-sensitive and binary nature. The self-biased CrSBr PD showed a photoresponsivity of similar to 0.26 mA/W with a detectivity of 3.4 x 10(8 )Jones at 514 nm excitation of fluency (0.42 mW/cm(2)) under ambient conditions. The optical polarization-induced photoresponse exhibits a large dichroic ratio of 3.4, while the polarization is set along the a- and the b-axes of single-crystalline CrSBr. The PD also showed excellent stability, retaining >95% of the initial photoresponsivity in ambient conditions for more than five months without encapsulation. Thus, we demonstrate CrSBr as a fascinating material for ultralow-powered optical polarization-resolving optoelectronic devices for cutting-edge technology.
Permanent Link: https://hdl.handle.net/11104/0349904