Nanowire Lasers of Formamidinium Lead Halide Perovskites and Their Stabilized Alloys with Improved Stability

Journal Article · Thu Jan 07 00:00:00 EST 2016 · Nano Letters

DOI:https://doi.org/10.1021/acs.nanolett.5b04053· OSTI ID:1234264

Fu, Yongping ^[1]; Zhu, Haiming ^[2]; Schrader, Alex W. ^[1]; Liang, Dong ^[1]; Ding, Qi ^[1]; Joshi, Prakriti ^[2]; Hwang, Leekyoung ^[1]; Zhu, X-Y. ^[2]; Jin, Song ^[1]

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1. Department of Chemistry, University of Wisconsin-Madison, 1101 University Avenue, Madison, Wisconsin 53706, United States
2. Department of Chemistry, Columbia University, New York, New York 10027, United States

The excellent intrinsic optoelectronic properties of methylammonium lead halide perovskites (MAPbX₃, X = Br, I), such as high photoluminescence quantum efficiency, long carrier lifetime, and high gain coupled with the facile solution growth of nanowires make them promising new materials for ultralow-threshold nanowire lasers. However, their photo and thermal stabilities need to be improved for practical applications. Herein, we report a low-temperature solution growth of single crystal nanowires of formamidinium lead halide perovskites (FAPbX₃) that feature red-shifted emission and better thermal stability compared to MAPbX₃. We demonstrate optically pumped room-temperature near-infrared (~820 nm) and green lasing (~560 nm) from FAPbI₃ (and MABr-stabilized FAPbI₃) and FAPbBr₃ nanowires with low lasing thresholds of several microjoules per square centimeter and high quality factors of about 1500–2300. More remarkably, the FAPbI₃ and MABr-stabilized FAPbI₃ nanowires display durable room-temperature lasing under ~10⁸ shots of sustained illumination of 402 nm pulsed laser excitation (150 fs, 250 kHz), substantially exceeding the stability of MAPbI₃ (~10⁷ laser shots). We further demonstrate tunable nanowire lasers in wider wavelength region from FA-based lead halide perovskite alloys (FA,MA)PbI₃ and (FA,MA)Pb(I,Br)₃ through cation and anion substitutions. The results suggest that formamidinium lead halide perovskite nanostructures could be more promising and stable materials for the development of light-emitting diodes and continuous-wave lasers.

• Research Organization: Columbia Univ., New York, NY (United States); Univ. of Wisconsin, Madison, WI (United States)
• Sponsoring Organization: USDOE Office of Science (SC), Basic Energy Sciences (BES); National Science Foundation (NSF)
• Grant/Contract Number: FG02-09ER46664; SC0010692-02; SC0010692; DMR-1420634; DMR-0520527; DMR-0425880
• OSTI ID: 1234264
• Alternate ID(s): OSTI ID: 1437107
• Journal Information: Nano Letters, Journal Name: Nano Letters Vol. 16 Journal Issue: 2; ISSN 1530-6984
• Publisher: American Chemical Society
• Country of Publication: United States
• Language: English

Related Subjects

77 NANOSCIENCE AND NANOTECHNOLOGY
37 INORGANIC, ORGANIC, PHYSICAL, AND ANALYTICAL CHEMISTRY
formamidinium lead trihalide perovskite
nanowires
photostability
semiconductor nanowire lasers
tunable lasers