Canonical RETe₃ (RE = Rare‐Earth Elements) with Charge Density Wave for Room Temperature Self‐Powered Photodetectors Spanning Mid‐Wave Infrared Band

Advanced Functional Materials, Journal Year: 2025, Volume and Issue: unknown

Published: Feb. 21, 2025

Abstract Charge density wave (CDW), as an ordered electronic state, typically leads to the opening of a narrow bandgap, which can be excited by relatively low‐energy photons, such infrared light. Compounds with CDW, therefore, hold significant potential for high‐performance broadband photodetectors. In this work, rare‐earth tritellurides ( RE Te 3 , where = La, Ce, Pr, Nd, Sm, and Dy), well‐known series CDW transitions above room temperature, are investigated first time room‐temperature, broadband, self‐powered photodetection. ‐based photodetectors demonstrate response spanning 380 4400 nm, covering ultraviolet mid‐wave range. Notably, DyTe photodetector achieves responsivity 27 mA W −1 at 3500 nm in region, detectivity 1.26 × 10 9 Jones 78 ms, comparable dominated photothermoelectric effect based on graphene. This work establishes promising new family low‐power, photodetection applications.

Language: Английский

High-performance terahertz detection in Weyl semimetal NbP nanosheets

Infrared Physics & Technology, Journal Year: 2025, Volume and Issue: 149, P. 105896 - 105896

Published: May 10, 2025

Language: Английский