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人工晶体学报 ›› 2026, Vol. 55 ›› Issue (3): 431-438.DOI: 10.16553/j.cnki.issn1000-985x.2025.0209

• 研究论文 • 上一篇    下一篇

金属有机化学气相外延法中临界斜切角对薄层InGaN生长的影响

张东炎1,2,3(), 林旺1,2(), 高守帅1,2(), 金超1,2, 韩宝仪3, 李欣3, 仲继宇3, 李维环1,2, 刘宏伟4   

  1. 1.天津三安光电有限公司,天津 300384
    2.天津市半导体发光二极管芯片企业重点实验室,天津 300384
    3.南开大学商学院,天津 300071
    4.天津工业大学电子信息工程学院,天津 300387
  • 收稿日期:2025-09-28 出版日期:2026-03-20 发布日期:2026-04-08
  • 通信作者: 林 旺,博士。E-mail:wang.lin@sanan-e.com
    高守帅,博士。E-mail:shoushuai.gao@sanan-e.com
  • 作者简介:张东炎(1983—),男,湖北省人,博士,高级工程师。E-mail:dongyan.zhang@sanan-e.com
  • 基金资助:
    国家重点研发计划(2022YFB3604601)

Effect of Critical Miscut Angle on Growth of Thin InGaN in Metal-Organic Chemical Vapor Deposition Method

ZHANG Dongyan1,2,3(), LIN Wang1,2(), GAO Shoushuai1,2(), JIN Chao1,2, HAN Baoyi3, LI Xin3, ZHONG Jiyu3, LI Weihuan1,2, LIU Hongwei4   

  1. 1.Tianjin San’an Optoelectronics Co. ,Ltd. ,Tianjin 300384,China
    2.Tianjin Key Laboratory of Semiconductor Light Emitting Diode Chip Enterprises,Tianjin 300384,China
    3.Business School,Nankai University,Tianjin 300071,China
    4.School of Electronic and Information Engineering,Tian Gong University,Tianjin 300387,China
  • Received:2025-09-28 Online:2026-03-20 Published:2026-04-08

摘要: 本文通过金属有机化学气相外延(MOCVD)方法,系统研究了c面GaN衬底斜切角对InGaN外延层形貌、铟掺入行为及光学性能的影响。研究结果表明,随着衬底斜切角增大,InGaN形貌由二维岛状结构逐渐转变为阶梯状结构,该转变主要由表面过饱和度降低驱动。二维岛向阶梯结构转变的临界斜切角随气相过饱和度的升高而增大,可通过降低生长温度或提高生长速率实现。此外,InN摩尔分数和光致发光强度均在临界斜切角附近达到最大值。本研究揭示了斜切角与生长条件共同调控InGaN形貌与性能的机制,为高质量InGaN基光电器件的制备提供了理论依据和实验指导。

关键词: InGaN; MOCVD; 衬底斜切角; 表面形貌; 表面过饱和度; 光致发光

Abstract: This study systematically investigates the effects of the miscut angle of c-plane GaN substrates on the morphology, indium incorporation behavior, and optical properties of InGaN epitaxial layers grown by metal-organic chemical vapor deposition (MOCVD) method. The results demonstrate that as the substrate miscut angle increases, the morphology of InGaN transitions from two-dimensional island-like structures to step-like structures, primarily driven by a reduction in surface supersaturation. The critical miscut angle for the transition from two-dimensional islands to step structures increases with higher vapor-phase supersaturation, which can be achieved by lowering the growth temperature or increasing the growth rate. Furthermore, both the InN mole fraction and photoluminescence intensity reach their maximum values near the critical miscut angle. This study elucidates the mechanism by which the miscut angle and growth conditions jointly regulate the morphology and properties of InGaN, providing both theoretical underpinnings and experimental guidance for the fabrication of high-quality InGaN-based optoelectronic devices.

Key words: InGaN; MOCVD; substrate miscut angle; surface morphology; surface supersaturation; photoluminescence

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