The microstructure, local indium composition and photoluminescence in green‐emitting InGaN/GaN quantum wells | Zendy

CHERY N. | Zendy; NGO T.H. | Zendy; CHAUVAT M.P. | Zendy; DAMILANO B. | Zendy; COURVILLE A. | Zendy; DE MIERRY P. | Zendy; GRIEB T. | Zendy; MEHRTENS T. | Zendy; KRAUSE F.F. | Zendy; MÜLLERCASPARY K. | Zendy; SCHOWALTER M. | Zendy; GIL B. | Zendy; ROSENAUER A. | Zendy; RUTERANA P. | Zendy

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The microstructure, local indium composition and photoluminescence in green‐emitting InGaN/GaN quantum wells

Author(s) -

CHERY N.,

NGO T.H.,

CHAUVAT M.P.,

DAMILANO B.,

COURVILLE A.,

DE MIERRY P.,

GRIEB T.,

MEHRTENS T.,

KRAUSE F.F.,

MÜLLERCASPARY K.,

SCHOWALTER M.,

GIL B.,

ROSENAUER A.,

RUTERANA P.

Publication year - 2017

Publication title -

journal of microscopy

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 0.569

H-Index - 111

eISSN - 1365-2818

pISSN - 0022-2720

DOI - 10.1111/jmi.12657

Subject(s) - indium , metalorganic vapour phase epitaxy , photoluminescence , materials science , heterojunction , quantum well , microstructure , indium nitride , optoelectronics , epitaxy , indium gallium nitride , transmission electron microscopy , gallium nitride , analytical chemistry (journal) , chemistry , optics , nanotechnology , laser , physics , metallurgy , layer (electronics) , chromatography

Summary In this work, we analyse the microstructure and local chemical composition of green‐emitting In x Ga 1– x N/GaN quantum well (QW) heterostructures in correlation with their emission properties. Two samples of high structural quality grown by metalorganic vapour phase epitaxy (MOVPE) with a nominal composition of x = 0.15 and 0.18 indium are discussed. The local indium composition is quantitatively evaluated by comparing scanning transmission electron microscopy (STEM) images to simulations and the local indium concentration is extracted from intensity measurements. The calculations point out that the measured indium fluctuations may be correlated to the large width and intensity decrease of the PL emission peak.

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