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Title: Continuous‐Wave Lasing in Cesium Lead Bromide Perovskite Nanowires

Journal Article · · Advanced Optical Materials

Abstract Lead halide perovskite nanowires (NWs) have been demonstrated in pulsed lasing with high quantum yields, low thresholds, and broad tunability. However, continuous‐wave (CW) lasing, necessary for many optoelectronic applications, has not been achieved to date. This is thought to be due to many‐body screening, which reduces the excitonic resonance enhancement of the oscillator strength at high excitation densities necessary for population inversion. Here CW lasing in CsPbBr 3 perovskite NWs is reported. Analysis of the cavity modes and their temperature dependence reveals that both CW and pulsed lasing originate from polariton modes near the bottleneck region on the lower polariton branch, with a vacuum Rabi splitting of 0.20 ± 0.03 eV. These findings suggest that lead halide perovskite NWs may serve as low‐power CW coherent light sources and as model systems for polaritonics in the strong‐coupling regime.

Sponsoring Organization:
USDOE
Grant/Contract Number:
SC0010692
OSTI ID:
1413827
Journal Information:
Advanced Optical Materials, Journal Name: Advanced Optical Materials Vol. 6 Journal Issue: 2; ISSN 2195-1071
Publisher:
Wiley Blackwell (John Wiley & Sons)Copyright Statement
Country of Publication:
Germany
Language:
English
Citation Metrics:
Cited by: 148 works
Citation information provided by
Web of Science

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