Please use this identifier to cite or link to this item: https://hdl.handle.net/10356/138379
Title: Solution‐processed lead iodide for ultrafast all‐optical switching of terahertz photonic devices
Authors: Manjappa, Manukumara
Solanki, Ankur
Kumar, Abhishek
Sum, Tze Chien
Singh, Ranjan
Keywords: Science::Physics
Issue Date: 2019
Source: Manjappa, M., Solanki, A., Kumar, A., Sum, T. C., & Singh, R. (2019). Solution‐processed lead iodide for ultrafast all‐optical switching of terahertz photonic devices. Advanced Materials, 31 (32), 1901455-. doi:10.1002/adma.201901455
Project: MOE2015‐T2‐2‐103
MOE2017‐T2‐1‐110
MOE2015‐T2‐2‐015
MOE2016‐T2‐1‐034
M4080514
M4082176
Journal: Advanced Materials
Abstract: Solution‐processed lead iodide (PbI2) governs the charge transport characteristics in the hybrid metal halide perovskites. Besides being a precursor in enhancing the performance of perovskite solar cells, PbI2 alone offers remarkable optical and ultrasensitive photoresponsive properties that remain largely unexplored. Here, the photophysics and the ultrafast carrier dynamics of the solution processed PbI2 thin film is probed experimentally. A PbI2 integrated metamaterial photonic device with switchable picosecond time response at extremely low photoexcitation fluences is demonstrated. Further, findings show strongly confined terahertz field induced tailoring of sensitivity and switching time of the metamaterial resonances for different thicknesses of PbI2 thin film. The approach has two far reaching consequences: the first lead‐iodide‐based ultrafast photonic device and resonantly confined electromagnetic field tailored transient nonequilibrium dynamics of PbI2 which could also be applied to a broad range of semiconductors for designing on‐chip, ultrafast, all‐optical switchable photonic devices.
URI: https://hdl.handle.net/10356/138379
ISSN: 1521-4095
DOI: 10.1002/adma.201901455
DOI (Related Dataset): https://doi.org/10.21979/N9/ELRXN4
Rights: This is the peer reviewed version of the following article: Manjappa, M., Solanki, A., Kumar, A., Sum, T. C., & Singh, R. (2019). Solution‐processed lead iodide for ultrafast all‐optical switching of terahertz photonic devices. Advanced Materials, 31 (32), 1901455-. doi:10.1002/adma.201901455, which has been published in final form at 10.1002/adma.201901455. This article may be used for non-commercial purposes in accordance with Wiley Terms and Conditions for Use of Self-Archived Versions.
Fulltext Permission: open
Fulltext Availability: With Fulltext
Appears in Collections:SPMS Journal Articles

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