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dc.contributor.authorWang, Yu-Chien_US
dc.contributor.authorLi, Hengen_US
dc.contributor.authorHong, Yu-Hengen_US
dc.contributor.authorHong, Kuo-Binen_US
dc.contributor.authorChen, Fang-Chungen_US
dc.contributor.authorHsu, Chia-Hungen_US
dc.contributor.authorLee, Ray-Kuangen_US
dc.contributor.authorConti, Claudioen_US
dc.contributor.authorKao, Tsung Shengen_US
dc.contributor.authorLu, Tien-Changen_US
dc.date.accessioned2019-08-02T02:18:36Z-
dc.date.available2019-08-02T02:18:36Z-
dc.date.issued2019-05-01en_US
dc.identifier.issn1936-0851en_US
dc.identifier.urihttp://dx.doi.org/10.1021/acsnano.9b00154en_US
dc.identifier.urihttp://hdl.handle.net/11536/152405-
dc.description.abstractDisorder is emerging as a strategy for fabricating random laser sources with very promising materials, such as perovskites, for which standard laser cavities are not effective or too expensive. We need, however, different fabrication protocols and technologies for reducing the laser threshold and controlling its emission. Here, we demonstrate an effectively solvent-engineered method for high-quality perovskite thin films on a flexible polyimide substrate. The fractal perovskite thin films exhibit excellent optical properties at room temperature and easily achieve lasing action without any laser cavity above room temperature with a low pumping threshold. The lasing action is also observed in curved perovskite thin films on flexible substrates. The lasing threshold can be further reduced by increasing the local curvature, which modifies the scattering strengths of the bent thin film. We also show that the curved perovskite lasers are extremely robust with respect to repeated deformations. Because of the low spatial coherence, these curved random laser devices are efficient and durable speckle-free light sources for applications in spectroscopy, bioimaging, and illumination.en_US
dc.language.isoen_USen_US
dc.subjectperovskiteen_US
dc.subjectrandom laseren_US
dc.subjectsolvent engineering flexible substrateen_US
dc.subjectspeckle-freeen_US
dc.titleFlexible Organometal-Halide Perovskite Lasers for Speckle Reduction in Imaging Projectionen_US
dc.typeArticleen_US
dc.identifier.doi10.1021/acsnano.9b00154en_US
dc.identifier.journalACS NANOen_US
dc.citation.volume13en_US
dc.citation.issue5en_US
dc.citation.spage5421en_US
dc.citation.epage5429en_US
dc.contributor.department電機學院zh_TW
dc.contributor.department光電工程學系zh_TW
dc.contributor.departmentCollege of Electrical and Computer Engineeringen_US
dc.contributor.departmentDepartment of Photonicsen_US
dc.identifier.wosnumberWOS:000469886300048en_US
dc.citation.woscount0en_US
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