Nothing Special   »   [go: up one dir, main page]

CN111370545B - 一种提升led抗静电性能的外延结构及其制备方法 - Google Patents

一种提升led抗静电性能的外延结构及其制备方法 Download PDF

Info

Publication number
CN111370545B
CN111370545B CN202010237735.1A CN202010237735A CN111370545B CN 111370545 B CN111370545 B CN 111370545B CN 202010237735 A CN202010237735 A CN 202010237735A CN 111370545 B CN111370545 B CN 111370545B
Authority
CN
China
Prior art keywords
layer
gradually
quantum well
type gan
growing
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Active
Application number
CN202010237735.1A
Other languages
English (en)
Other versions
CN111370545A (zh
Inventor
刘恒山
曹鑫
吴永胜
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Fujian Prima Optoelectronics Co Ltd
Original Assignee
Fujian Prima Optoelectronics Co Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Fujian Prima Optoelectronics Co Ltd filed Critical Fujian Prima Optoelectronics Co Ltd
Priority to CN202010237735.1A priority Critical patent/CN111370545B/zh
Publication of CN111370545A publication Critical patent/CN111370545A/zh
Application granted granted Critical
Publication of CN111370545B publication Critical patent/CN111370545B/zh
Active legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Images

Classifications

    • HELECTRICITY
    • H01ELECTRIC ELEMENTS
    • H01LSEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
    • H01L33/00Semiconductor devices having potential barriers specially adapted for light emission; Processes or apparatus specially adapted for the manufacture or treatment thereof or of parts thereof; Details thereof
    • H01L33/02Semiconductor devices having potential barriers specially adapted for light emission; Processes or apparatus specially adapted for the manufacture or treatment thereof or of parts thereof; Details thereof characterised by the semiconductor bodies
    • H01L33/04Semiconductor devices having potential barriers specially adapted for light emission; Processes or apparatus specially adapted for the manufacture or treatment thereof or of parts thereof; Details thereof characterised by the semiconductor bodies with a quantum effect structure or superlattice, e.g. tunnel junction
    • H01L33/06Semiconductor devices having potential barriers specially adapted for light emission; Processes or apparatus specially adapted for the manufacture or treatment thereof or of parts thereof; Details thereof characterised by the semiconductor bodies with a quantum effect structure or superlattice, e.g. tunnel junction within the light emitting region, e.g. quantum confinement structure or tunnel barrier
    • HELECTRICITY
    • H01ELECTRIC ELEMENTS
    • H01LSEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
    • H01L33/00Semiconductor devices having potential barriers specially adapted for light emission; Processes or apparatus specially adapted for the manufacture or treatment thereof or of parts thereof; Details thereof
    • H01L33/005Processes
    • H01L33/0062Processes for devices with an active region comprising only III-V compounds
    • H01L33/0066Processes for devices with an active region comprising only III-V compounds with a substrate not being a III-V compound
    • HELECTRICITY
    • H01ELECTRIC ELEMENTS
    • H01LSEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
    • H01L33/00Semiconductor devices having potential barriers specially adapted for light emission; Processes or apparatus specially adapted for the manufacture or treatment thereof or of parts thereof; Details thereof
    • H01L33/005Processes
    • H01L33/0062Processes for devices with an active region comprising only III-V compounds
    • H01L33/0075Processes for devices with an active region comprising only III-V compounds comprising nitride compounds
    • HELECTRICITY
    • H01ELECTRIC ELEMENTS
    • H01LSEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
    • H01L33/00Semiconductor devices having potential barriers specially adapted for light emission; Processes or apparatus specially adapted for the manufacture or treatment thereof or of parts thereof; Details thereof
    • H01L33/02Semiconductor devices having potential barriers specially adapted for light emission; Processes or apparatus specially adapted for the manufacture or treatment thereof or of parts thereof; Details thereof characterised by the semiconductor bodies
    • H01L33/20Semiconductor devices having potential barriers specially adapted for light emission; Processes or apparatus specially adapted for the manufacture or treatment thereof or of parts thereof; Details thereof characterised by the semiconductor bodies with a particular shape, e.g. curved or truncated substrate
    • HELECTRICITY
    • H01ELECTRIC ELEMENTS
    • H01LSEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
    • H01L33/00Semiconductor devices having potential barriers specially adapted for light emission; Processes or apparatus specially adapted for the manufacture or treatment thereof or of parts thereof; Details thereof
    • H01L33/02Semiconductor devices having potential barriers specially adapted for light emission; Processes or apparatus specially adapted for the manufacture or treatment thereof or of parts thereof; Details thereof characterised by the semiconductor bodies
    • H01L33/26Materials of the light emitting region
    • H01L33/30Materials of the light emitting region containing only elements of Group III and Group V of the Periodic Table
    • H01L33/32Materials of the light emitting region containing only elements of Group III and Group V of the Periodic Table containing nitrogen

Landscapes

  • Engineering & Computer Science (AREA)
  • Manufacturing & Machinery (AREA)
  • Computer Hardware Design (AREA)
  • Microelectronics & Electronic Packaging (AREA)
  • Power Engineering (AREA)
  • Led Devices (AREA)

Abstract

本发明涉及一种提升LED抗静电性能的外延结构及其制备方法,所述结构包括在衬底上由上至下依次生长的氮化物缓冲层、N型GaN层、渐变的量子阱层、P型GaN层和欧姆接触层;渐变的量子阱层为若干依次层叠的InuGa(1‑u)N层、GaN层和AlxInyGa(1‑x‑y)N层。量子阱层中不同周期InuGa(1‑u)N层、GaN层与AlxInyGa(1‑x‑y)层的总厚度是不变的。其中,GaN层的厚度随着周期数增大而逐渐增大,InuGa(1‑u)N层与AlxInyGa(1‑x‑y)层的厚度随着周期数增大而逐渐减小;本发明通过渐变的厚度梯度,一方面能够减少位错密度,有利于电流扩展,从而提高材料的抗静电能力;另一方面,可以提高载流子浓度,提高电子迁移率,降低发光电压,从而提升抗静电能力。

Description

一种提升LED抗静电性能的外延结构及其制备方法
技术领域
本发明涉及半导体电子技术领域,特别是一种提升LED抗静电性能的外延结构及其制备方法。
背景技术
发光二极管(LED)是由Ⅲ-Ⅴ族化合物半导体制成的,它的核心是PN结,它具有一般P-N结正向导通,反向截至,击穿特性。如今,我们使用的LED大多为GaN基LED。GaN 基 LED和传统的 LED 相比,由于GaN是电阻率较高的宽禁带材料,导致它在生产过程中产生的感生电荷不易消失。当感生电荷积累到一定程度的时候,会产生很高的静电电压,易发生击穿现象并产生漏电。因此,设计一种渐变的量子阱层结构,一方面能够减少位错密度,有利于电流扩展,提高材料的抗静电能力;另一方面,可以提高载流子浓度,提高电子迁移率,降低发光电压,从而提升抗静电能力。
目前使用的GaN基 LED,由于GaN是电阻率较高的宽禁带材料,导致它在生产过程中产生的感生电荷不易消失。当感生电荷积累到一定程度的时候,会产生很高的静电电压,易发生击穿现象并产生漏电。也就是说,GaN基LED显而易见的缺点之一即为它的抗静电能力差,常见的GaN基LED外延结构如图1所示。
发明内容
有鉴于此,本发明的目的是提供一种提升LED抗静电性能的外延结构及其制备方法,能够提升抗静电能力。
本发明采用以下方案实现:一种提升LED抗静电性能的外延结构,由下至上依次包括衬底、氮化物缓冲层、N型GaN层、渐变的量子阱层、P型GaN层和欧姆接触层;在所述衬底上生长氮化物缓冲层,在所述氮化物缓冲层上生长N型GaN层,在所述N型GaN层上生长渐变的量子阱层,在所述渐变的量子阱层上依次生长P型GaN层和欧姆接触层;所述渐变的量子阱层为若干从下往上依次层叠的InuGa(1-u)N层、GaN层和AlxInyGa(1-x-y)N层。
进一步地,本发明还提供一种基于提升LED抗静电性能的外延结构制备方法,包括以下步骤:
步骤S1:提供一图形化衬底,基于图形化衬底用AlN溅射设备镀一层ALN缓冲层;
步骤S2:基于AlN缓冲层,在MOCVD反应腔中,生长uGaN和N型GaN层;所述AlN缓冲层和所述uGaN层组成所述氮化物缓冲层;
步骤S3:基于N型GaN层,生长渐变的量子阱层;
步骤S4:在渐变的量子阱层上继续生长P型GaN层,最后生长欧姆接触层。
进一步地,所述衬底是蓝宝石(Al2O3)、Si或SiC。
进一步地,所述渐变的量子阱层为若干从下往上依次层叠的InuGa(1-u)N层、GaN层和AlxInyGa(1-x-y)N层;每个周期均包括从下往上依次层叠的一层InuGa(1-u)N层、一层GaN层和一层AlxInyGa(1-x-y)N层;不同周期InuGa(1-u)N层、GaN层与AlxInyGa(1-x-y)层的总厚度是不变的;其中,GaN层的厚度随着周期数增大而逐渐增大,InxGa(1-u)N层与AlxInyGa(1-x-y)层的厚度随着周期数增大而逐渐减小;且0≤u≤0.2;0≤x≤0.1;0≤y≤0.3。
与现有技术相比,本发明具有以下有益效果:
(1)本发明渐变的量子阱层通过渐变的厚度梯度,一方面能够减少位错密度,有利于电流扩展,从而提高材料的抗静电能力;另一方面,可以提高载流子浓度,提高电子迁移率,降低发光电压,从而提升抗静电能力。
(2)本发明可以有效提升LED的抗静电能力,从而提升了外延片的价值。通过此方法制备的外延片,其LED芯片电压比正常电压低2%-5%,提高了抗静电能力,较正常的外延片价格提升5%~10%左右。
附图说明
图1为本发明实施例的传统的GaN基LED外延结构图。
图2为本发明实施例的外延结构图。
具体实施方式
下面结合附图及实施例对本发明做进一步说明。
应该指出,以下详细说明都是例示性的,旨在对本申请提供进一步的说明。除非另有指明,本文使用的所有技术和科学术语具有与本申请所属技术领域的普通技术人员通常理解的相同含义。
需要注意的是,这里所使用的术语仅是为了描述具体实施方式,而非意图限制根据本申请的示例性实施方式。如在这里所使用的,除非上下文另外明确指出,否则单数形式也意图包括复数形式,此外,还应当理解的是,当在本说明书中使用术语“包含”和/或“包括”时,其指明存在特征、步骤、操作、器件、组件和/或它们的组合。
如图2所示,本实施例提供一种提升LED抗静电性能的外延结构,由下至上依次包括衬底、氮化物缓冲层、N型GaN层、渐变的量子阱层、P型GaN层和欧姆接触层;在所述衬底上生长氮化物缓冲层,在所述氮化物缓冲层上生长N型GaN层,在所述N型GaN层上生长渐变的量子阱层,在所述渐变的量子阱层上依次生长P型GaN层和欧姆接触层;所述渐变的量子阱层为若干从下往上依次层叠的InuGa(1-u)N层、GaN层和AlxInyGa(1-x-y)N层。
较佳的,本实施例还提供一种基于提升LED抗静电性能的外延结构制备方法,包括以下步骤:
步骤S1:提供一图形化衬底,基于图形化衬底用AlN溅射设备镀一层ALN缓冲层;
步骤S2:基于AlN缓冲层,在MOCVD反应腔中,生长uGaN和N型GaN层;所述AlN缓冲层和所述uGaN层组成所述氮化物缓冲层;
步骤S3:基于N型GaN层,生长渐变的量子阱层;
步骤S4:在渐变的量子阱层上继续生长P型GaN层,最后生长欧姆接触层。
在本实施例中,所述衬底是蓝宝石(Al2O3)、Si或SiC。
在本实施例中,所述渐变的量子阱层为若干从下往上依次层叠的InuGa(1-u)N层、GaN层和AlxInyGa(1-x-y)N层;每个周期均包括从下往上依次层叠的一层InuGa(1-u)N层、一层GaN层和一层AlxInyGa(1-x-y)N层;不同周期InuGa(1-u)N层、GaN层与AlxInyGa(1-x-y)层的总厚度是不变的;其中,GaN层的厚度随着周期数增大而逐渐增大,InxGa(1-u)N层与AlxInyGa(1-x-y)层的厚度随着周期数增大而逐渐减小;且0≤u≤0.2;0≤x≤0.1;0≤y≤0.3。
以上所述仅为本发明的较佳实施例,凡依本发明申请专利范围所做的均等变化与修饰,皆应属本发明的涵盖范围。

Claims (3)

1.一种提升LED抗静电性能的外延结构,其特征在于:由下至上依次包括衬底、氮化物缓冲层、N型GaN层、渐变的量子阱层、P型GaN层和欧姆接触层;在所述衬底上生长氮化物缓冲层,在所述氮化物缓冲层上生长N型GaN层,在所述N型GaN层上生长渐变的量子阱层,在所述渐变的量子阱层上依次生长P型GaN层和欧姆接触层;所述渐变的量子阱层为若干从下往上依次层叠的InuGa(1-u)N层、GaN层和AlxInyGa(1-x-y)N层,每个周期均包括从下往上依次层叠的一层InuGa(1-u)N层、一层GaN层和一层AlxInyGa(1-x-y)N层;不同周期InuGa(1-u)N层、GaN层与AlxInyGa(1-x-y)N层的总厚度是不变的;其中,GaN层的厚度随着周期数增大而逐渐增大,Inu Ga(1-u)N层与AlxInyGa(1-x-y)N层的厚度随着周期数增大而逐渐减小;且0≤u≤0.2;0≤x≤0.1;0≤y≤0.3。
2.一种基于权利要求1所述的一种提升LED抗静电性能的外延结构制备方法,其特征在于:包括以下步骤:
步骤S1:提供一图形化衬底,基于图形化衬底用AlN溅射设备镀一层ALN缓冲层;
步骤S2:基于AlN缓冲层,在MOCVD反应腔中,生长uGaN和N型GaN层;所述AlN缓冲层和所述uGaN层组成所述氮化物缓冲层;
步骤S3:基于N型GaN层,生长渐变的量子阱层;
步骤S4:在渐变的量子阱层上继续生长P型GaN层,最后生长欧姆接触层。
3.根据权利要求2所述的一种提升LED抗静电性能的外延结构制备方法,其特征在于:所述衬底是蓝宝石、Si或SiC。
CN202010237735.1A 2020-03-30 2020-03-30 一种提升led抗静电性能的外延结构及其制备方法 Active CN111370545B (zh)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN202010237735.1A CN111370545B (zh) 2020-03-30 2020-03-30 一种提升led抗静电性能的外延结构及其制备方法

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN202010237735.1A CN111370545B (zh) 2020-03-30 2020-03-30 一种提升led抗静电性能的外延结构及其制备方法

Publications (2)

Publication Number Publication Date
CN111370545A CN111370545A (zh) 2020-07-03
CN111370545B true CN111370545B (zh) 2021-04-30

Family

ID=71209330

Family Applications (1)

Application Number Title Priority Date Filing Date
CN202010237735.1A Active CN111370545B (zh) 2020-03-30 2020-03-30 一种提升led抗静电性能的外延结构及其制备方法

Country Status (1)

Country Link
CN (1) CN111370545B (zh)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN111725366B (zh) * 2020-07-22 2024-11-05 福建兆元光电有限公司 一种混色的外延结构及制作方法

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104868025A (zh) * 2015-05-18 2015-08-26 聚灿光电科技股份有限公司 具有非对称超晶格层的GaN基LED外延结构及其制备方法
CN105449051A (zh) * 2014-08-25 2016-03-30 东莞市中镓半导体科技有限公司 一种采用MOCVD技术在GaN衬底或GaN/Al2O3复合衬底上制备高亮度同质LED的方法
CN105789394A (zh) * 2016-04-20 2016-07-20 映瑞光电科技(上海)有限公司 一种GaN基LED外延结构及其制备方法

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR102212561B1 (ko) * 2014-08-11 2021-02-08 삼성전자주식회사 반도체 발광 소자 및 반도체 발광 소자 패키지

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105449051A (zh) * 2014-08-25 2016-03-30 东莞市中镓半导体科技有限公司 一种采用MOCVD技术在GaN衬底或GaN/Al2O3复合衬底上制备高亮度同质LED的方法
CN104868025A (zh) * 2015-05-18 2015-08-26 聚灿光电科技股份有限公司 具有非对称超晶格层的GaN基LED外延结构及其制备方法
CN105789394A (zh) * 2016-04-20 2016-07-20 映瑞光电科技(上海)有限公司 一种GaN基LED外延结构及其制备方法

Also Published As

Publication number Publication date
CN111370545A (zh) 2020-07-03

Similar Documents

Publication Publication Date Title
TWI394288B (zh) 具有包含覆蓋結構的銦而以三族氮化物為主之量子井發光裝置結構
US8604461B2 (en) Semiconductor device structures with modulated doping and related methods
CN100466307C (zh) 氮化物半导体发光器件
CN103500780B (zh) 一种氮化镓基led外延结构及其制备方法
CN115188863B (zh) 发光二极管外延片及其制备方法
CN102738328B (zh) 一种发光二极管的外延片及其制造方法
CN105206726A (zh) 一种led结构及其生长方法
US20180138367A1 (en) Nitride Light Emitting Diode and Growth Method
CN105428482A (zh) 一种led外延结构及制作方法
CN107026223A (zh) Iii族氮化物半导体发光器件
KR20140030180A (ko) 반도체 적층체 및 그 제조 방법과 반도체 소자
KR101294518B1 (ko) 질화물 반도체 발광소자 및 그 제조 방법
CN114883462B (zh) 发光二极管外延片及其制备方法
CN106601885A (zh) 一种发光二极管的外延结构及其生长方法
CN105336821A (zh) GaN基LED外延结构及其制备方法
CN104993028B (zh) 一种发光二极管外延片
CN104638083A (zh) GaN基LED外延结构及其制作方法
KR101047652B1 (ko) 발광소자 및 그 제조방법
CN111370545B (zh) 一种提升led抗静电性能的外延结构及其制备方法
CN114373838A (zh) 带量子垒层硅掺杂结构的led外延片、生长方法及其制造方法
CN105304778A (zh) 提高GaN基LED抗静电性能的外延结构及其制备方法
CN108321266A (zh) 一种GaN基LED外延结构及其制备方法
CN113838954B (zh) 一种led外延及其制造方法
CN103985799B (zh) 发光二极管及其制作方法
CN115986014B (zh) 一种设有连接层的外延片及包含该外延片的发光二极管

Legal Events

Date Code Title Description
PB01 Publication
PB01 Publication
SE01 Entry into force of request for substantive examination
SE01 Entry into force of request for substantive examination
GR01 Patent grant
GR01 Patent grant