Wavelength-tunable waveguides based on polycrystalline organic-inorganic perovskite microwires

Ziyu Wang, Jingying Liu, Zai-Quan Xu, Yunzhou Xue, Liangcong Jiang, Jingchao Song, Fuzhi Huang, Yusheng Wang, Yu Lin Zhong, Yupeng Zhang, Yi Bing Cheng, Qiaoliang Bao

Research output: Contribution to journalArticleResearchpeer-review

52 Citations (Scopus)

Abstract

Hybrid organic-inorganic perovskites have emerged as new photovoltaic materials with impressively high power conversion efficiency due to their high optical absorption coefficient and long charge carrier diffusion length. In addition to high photoluminescence quantum efficiency and chemical tunability, hybrid organic-inorganic perovskites also show intriguing potential for diverse photonic applications. In this work, we demonstrate that polycrystalline organic-inorganic perovskite microwires can function as active optical waveguides with small propagation loss. The successful production of high quality perovskite microwires with different halogen elements enables the guiding of light with different colours. Furthermore, it is interesting to find that out-coupled light intensity from the microwire can be effectively modulated by an external electric field, which behaves as an electro-optical modulator. This finding suggests the promising applications of perovskite microwires as effective building blocks in micro/nano scale photonic circuits.

Original languageEnglish
Pages (from-to)6258-6264
Number of pages7
JournalNanoscale
Volume8
Issue number12
DOIs
Publication statusPublished - 28 Mar 2016

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