Different Optical Behaviors Revealed by Electroluminescence and Photoluminescence of InGaN/GaN Coupled Quantum Wells

Xu, Huan1,3; Wang, Yachao1; Hou, Xin1; Ou, Wei2; Yang, Tao1; Mei, Yang1; Zhang, Baoping1,2

2024-09-01

10.3390/nano14181523

NANOMATERIALS   影响因子和分区

2079-4991

The optical properties of wurtzite violet InGaN/GaN coupled quantum well (QW) structures are experimentally studied using photoluminescence (PL) and electroluminescence (EL) spectroscopy. Two emission peaks, referred to as Peak H and Peak L, are observed in both PL and EL spectra, due to the ground state splitting induced by the well coupling. Experimental PL and EL results reveal that coupled QWs show different optical responses due to the different variation in the electric field inside the QW structure. Since the direction of the polarization electric field of the as-grown well/barrier layers is different, the external electric field applied by electrodes can change the energy band alignment between the well and the barrier layers, thus adjusting the coupling between the wells. Our results provide relevant information to improve our understanding of the optical properties of InGaN/GaN QWs and to develop novel optoelectronic devices.

coupled quantum well photoluminescence electroluminescence

SCI

英语

通讯

null[U21A20493] ; null[62234011] ; null[62104204]

Chemistry ; Science & Technology - Other Topics ; Materials Science ; Physics

Chemistry, Multidisciplinary ; Nanoscience & Nanotechnology ; Materials Science, Multidisciplinary ; Physics, Applied

WOS:001323408600001

MDPI

Web of Science

1.Xiamen Univ, Dept Microelect & Integrated Circuits, Lab Micro Nanooptoelectron, Xiamen 361005, Peoples R China
2.Southern Univ Sci & Technol, Inst Nanosci & Applicat, Shenzhen 518055, Peoples R China
3.Toptrans Suzhou Corp Ltd, Suzhou 215000, Peoples R China

Xu, Huan,Wang, Yachao,Hou, Xin,et al. Different Optical Behaviors Revealed by Electroluminescence and Photoluminescence of InGaN/GaN Coupled Quantum Wells[J]. NANOMATERIALS,2024,14(18).

Xu, Huan.,Wang, Yachao.,Hou, Xin.,Ou, Wei.,Yang, Tao.,...&Zhang, Baoping.(2024).Different Optical Behaviors Revealed by Electroluminescence and Photoluminescence of InGaN/GaN Coupled Quantum Wells.NANOMATERIALS,14(18).

Xu, Huan,et al."Different Optical Behaviors Revealed by Electroluminescence and Photoluminescence of InGaN/GaN Coupled Quantum Wells".NANOMATERIALS 14.18(2024).