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arXiv · 2507.08180

Air-Stable Room-Temperature Quasi-2D Tin Iodide Perovskite Microlasers

Sangyeon Cho·Wenhao Shao·Jeong Hui Kim·Letian Dou·Seok-Hyun Yun
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Abstract

Quasi-2D tin iodide perovskites (TIPs) are promising lead-free alternatives for optoelectronic applications, but achieving stable lasing remains challenging due to their limited environmental stability. Here, we report air-stable, room-temperature lasing from quasi-2D TIP microcrystals as small as 4 {\mu}m. Incorporation of the organic spacer 5IPA3 significantly enhanced the stability of these materials compared to previously reported TIPs. Lasing was observed from both dielectric (n=4) and plasmonic (n=3 and n=4) TIP microlasers. Under picosecond pumping, lasing was sustained for over 10^8 pump pulses in ambient conditions. These results represent a significant step toward practical photonic applications of tin-based perovskites.

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Sangyeon Cho, Wenhao Shao, Jeong Hui Kim, Letian Dou, Seok-Hyun Yun. 2025-07-10. Air-Stable Room-Temperature Quasi-2D Tin Iodide Perovskite Microlasers. https://arxiv.org/abs/2507.08180

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