Terahertz Modulation of Silicon-Based Lead-Free Small-Bandgap Cs2CuSbCl6 Double Perovskite Nanocrystals

Optics 2026 Open access

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Authors: X.G. Song, Zhongxin Zhang, Reyihanguli Tudi, Abulimiti Yasen, Mei Xiang, Bumaliya Abulimiti
DOI: 10.3390/opt7010005
Cited by: 0
References: 18

Abstract

In this work, we synthesized a lead-free halide double perovskite, Cs2CuSbCl6, with high carrier mobility via a one-pot hot-injection method. When combined with a high-resistivity silicon wafer, it forms a Type-II heterojunction structure, and its modulation depth reaches 84% by adjusting the annealing temperature. It demonstrates promising modulation performance at 532 nm. Owing to its strong absorption in the ultraviolet region, Cs2CuSbCl6 shows potential for application in ultraviolet-controlled terahertz modulation.

Fields of Study & Subjects

Perovskite Materials and Applications Luminescence Properties of Advanced Materials Terahertz technology and applications

Publication details

Journal / source
Optics
Volume
7
Issue
1
Pages
5–5
Publication date
4 January 2026
Language
EN