Quantum efficiency of ZnO nanowire nanolasers

Yanfeng Zhang; Richard E. Russo; Samuel S. Mao

doi:10.1063/1.2001754

Quantum efficiency of ZnO nanowire nanolasers

Yanfeng Zhang, Richard E. Russo, Samuel S. Mao

Mechanical & Nuclear Engineering

Lawrence Berkeley National Laboratory

Research output: Contribution to journal › Article › peer-review

107 Scopus citations

Abstract

Crystalline ZnO nanowires were grown on sapphire and silicon substrates using pulsed-laser deposition. The optical properties of nanowire nanolasers, including their absolute light emission intensity and external and internal quantum efficiencies were experimentally determined. The external differential quantum efficiency was measured to be as high as 60% for lasing ZnO nanowires of 7.5 μm in length, compared to a value of approximately 10% for photoluminescence. The absolute light emission intensity for individual nanowires was found to be in the vicinity of 0.1 mW. By measuring the dependence of external differential quantum efficiency on the cavity length, the internal quantum efficiency of ZnO nanowire nanolasers was determined to be about 85%.

Original language	British English
Article number	043106
Journal	Applied Physics Letters
Volume	87
Issue number	4
DOIs	https://doi.org/10.1063/1.2001754
State	Published - 25 Jul 2005

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title = "Quantum efficiency of ZnO nanowire nanolasers",

abstract = "Crystalline ZnO nanowires were grown on sapphire and silicon substrates using pulsed-laser deposition. The optical properties of nanowire nanolasers, including their absolute light emission intensity and external and internal quantum efficiencies were experimentally determined. The external differential quantum efficiency was measured to be as high as 60% for lasing ZnO nanowires of 7.5 μm in length, compared to a value of approximately 10% for photoluminescence. The absolute light emission intensity for individual nanowires was found to be in the vicinity of 0.1 mW. By measuring the dependence of external differential quantum efficiency on the cavity length, the internal quantum efficiency of ZnO nanowire nanolasers was determined to be about 85%.",

author = "Yanfeng Zhang and Russo, {Richard E.} and Mao, {Samuel S.}",

note = "Funding Information: This research was supported by the U.S. Department of Energy, National Nuclear Security Administration, Office of Nonproliferation Research and Engineering, NA22, under Contract No. DE-AC03-76SF00098.",

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Y1 - 2005/7/25

N2 - Crystalline ZnO nanowires were grown on sapphire and silicon substrates using pulsed-laser deposition. The optical properties of nanowire nanolasers, including their absolute light emission intensity and external and internal quantum efficiencies were experimentally determined. The external differential quantum efficiency was measured to be as high as 60% for lasing ZnO nanowires of 7.5 μm in length, compared to a value of approximately 10% for photoluminescence. The absolute light emission intensity for individual nanowires was found to be in the vicinity of 0.1 mW. By measuring the dependence of external differential quantum efficiency on the cavity length, the internal quantum efficiency of ZnO nanowire nanolasers was determined to be about 85%.

AB - Crystalline ZnO nanowires were grown on sapphire and silicon substrates using pulsed-laser deposition. The optical properties of nanowire nanolasers, including their absolute light emission intensity and external and internal quantum efficiencies were experimentally determined. The external differential quantum efficiency was measured to be as high as 60% for lasing ZnO nanowires of 7.5 μm in length, compared to a value of approximately 10% for photoluminescence. The absolute light emission intensity for individual nanowires was found to be in the vicinity of 0.1 mW. By measuring the dependence of external differential quantum efficiency on the cavity length, the internal quantum efficiency of ZnO nanowire nanolasers was determined to be about 85%.

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Quantum efficiency of ZnO nanowire nanolasers

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