Scientific Achievement

Researchers in the Fundamentals of Semiconductor Nanowires program developed synthesis procedures for single-crystalline chalcogenide perovskite nanowires and demonstrated their tunability in photoluminescence from various compositions.

Significance and Impact

The first achievement of single-crystalline one-dimensional nanowires with extraordinary structure stability and exhibit photoluminescence from selected compositions, indicating their potential in next-generation on-chip optoelectronics.

Research Details

• Synthesis of high-quality (Ba/Sr)(Zr/Hf)S₃ nanowires via vapor-phase deposition on sapphire substrates in a sealed quartz ampoule
• Single-crystallinity confirmed via atomic-resolution STEM images and revealed nanowire growth direction along [010]
• Tunable photoluminescence with nanosecond PL lifetimes comparable to those of halide perovskites

Publication Details

Y. Jiang, H. K. D. Le, L. Verbitsky, H. DeVyldere, A. M. Oddo, B. Pan, H.-g. Song, C. Zhu, H. Zhu, M. C. Scott, P. Yang, Nano Letters (2025).

DOI: 10.1021/acs.nanolett.5c00815

Work was performed in the Lawrence Berkeley National Lab and  Molecular Foundry.