CN104576809B - 905nm硅雪崩光电二极管及其制作方法 - Google Patents

905nm硅雪崩光电二极管及其制作方法 Download PDF

Info

Publication number
CN104576809B
CN104576809B CN201510003267.0A CN201510003267A CN104576809B CN 104576809 B CN104576809 B CN 104576809B CN 201510003267 A CN201510003267 A CN 201510003267A CN 104576809 B CN104576809 B CN 104576809B
Authority
CN
China
Prior art keywords
protection ring
ring
layer
type
epitaxial layer
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
CN201510003267.0A
Other languages
English (en)
Other versions
CN104576809A (zh
Inventor
曾武贤
李睿智
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.)
CETC 44 Research Institute
Original Assignee
CETC 44 Research Institute
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 CETC 44 Research Institute filed Critical CETC 44 Research Institute
Priority to CN201510003267.0A priority Critical patent/CN104576809B/zh
Publication of CN104576809A publication Critical patent/CN104576809A/zh
Application granted granted Critical
Publication of CN104576809B publication Critical patent/CN104576809B/zh
Active legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Classifications

    • HELECTRICITY
    • H01ELECTRIC ELEMENTS
    • H01LSEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
    • H01L31/00Semiconductor devices sensitive to infrared radiation, light, electromagnetic radiation of shorter wavelength or corpuscular radiation and specially adapted either for the conversion of the energy of such radiation into electrical energy or for the control of electrical energy by such radiation; Processes or apparatus specially adapted for the manufacture or treatment thereof or of parts thereof; Details thereof
    • H01L31/08Semiconductor devices sensitive to infrared radiation, light, electromagnetic radiation of shorter wavelength or corpuscular radiation and specially adapted either for the conversion of the energy of such radiation into electrical energy or for the control of electrical energy by such radiation; Processes or apparatus specially adapted for the manufacture or treatment thereof or of parts thereof; Details thereof in which radiation controls flow of current through the device, e.g. photoresistors
    • H01L31/10Semiconductor devices sensitive to infrared radiation, light, electromagnetic radiation of shorter wavelength or corpuscular radiation and specially adapted either for the conversion of the energy of such radiation into electrical energy or for the control of electrical energy by such radiation; Processes or apparatus specially adapted for the manufacture or treatment thereof or of parts thereof; Details thereof in which radiation controls flow of current through the device, e.g. photoresistors characterised by at least one potential-jump barrier or surface barrier, e.g. phototransistors
    • H01L31/101Devices sensitive to infrared, visible or ultraviolet radiation
    • H01L31/102Devices sensitive to infrared, visible or ultraviolet radiation characterised by only one potential barrier or surface barrier
    • H01L31/107Devices sensitive to infrared, visible or ultraviolet radiation characterised by only one potential barrier or surface barrier the potential barrier working in avalanche mode, e.g. avalanche photodiode
    • HELECTRICITY
    • H01ELECTRIC ELEMENTS
    • H01LSEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
    • H01L31/00Semiconductor devices sensitive to infrared radiation, light, electromagnetic radiation of shorter wavelength or corpuscular radiation and specially adapted either for the conversion of the energy of such radiation into electrical energy or for the control of electrical energy by such radiation; Processes or apparatus specially adapted for the manufacture or treatment thereof or of parts thereof; Details thereof
    • H01L31/0248Semiconductor devices sensitive to infrared radiation, light, electromagnetic radiation of shorter wavelength or corpuscular radiation and specially adapted either for the conversion of the energy of such radiation into electrical energy or for the control of electrical energy by such radiation; Processes or apparatus specially adapted for the manufacture or treatment thereof or of parts thereof; Details thereof characterised by their semiconductor bodies
    • H01L31/0352Semiconductor devices sensitive to infrared radiation, light, electromagnetic radiation of shorter wavelength or corpuscular radiation and specially adapted either for the conversion of the energy of such radiation into electrical energy or for the control of electrical energy by such radiation; Processes or apparatus specially adapted for the manufacture or treatment thereof or of parts thereof; Details thereof characterised by their semiconductor bodies characterised by their shape or by the shapes, relative sizes or disposition of the semiconductor regions
    • HELECTRICITY
    • H01ELECTRIC ELEMENTS
    • H01LSEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
    • H01L31/00Semiconductor devices sensitive to infrared radiation, light, electromagnetic radiation of shorter wavelength or corpuscular radiation and specially adapted either for the conversion of the energy of such radiation into electrical energy or for the control of electrical energy by such radiation; Processes or apparatus specially adapted for the manufacture or treatment thereof or of parts thereof; Details thereof
    • H01L31/18Processes or apparatus specially adapted for the manufacture or treatment of these devices or of parts thereof

Abstract

本发明公开了一种905nm硅雪崩光电二极管,包括P+衬底层、π型层、P型雪崩区、N+光敏区、N+保护环和P+截止环,其创新在于:在所述N+保护环的外周和所述P+截止环的内周之间设置有第二N+保护环。本发明还公开了前述905nm硅雪崩光电二极管的制作方法。本发明的有益技术效果是:能大幅提高905nm硅雪崩光电二极管的工作温度上限。

Description

905nm硅雪崩光电二极管及其制作方法
技术领域
本发明涉及一种硅雪崩光电二极管制作技术,尤其涉及一种905nm硅雪崩光电二极管及其制作方法。
背景技术
硅雪崩光电二极管是一种具有内部增益的光电探测器,由于其具备倍增功能,因此光电转换灵敏度比一般的PN结光敏二极管要高很多,在光敏器件中具有重要的地位。
基于常规思路,现有硅雪崩光电二极管上只设置了一个保护环,存在的问题是:硅雪崩光电二极管在高温下(大于85℃),工作电压会变高,极易发生边缘击穿问题。
发明内容
针对背景技术中的问题,本发明提出了一种905nm硅雪崩光电二极管,包括P+衬底层、π型层、P型雪崩区、N+光敏区、N+保护环和P+截止环,其创新在于:在所述N+保护环的外周和所述P+截止环的内周之间设置有第二N+保护环。
本发明的原理是:本发明通过在N+保护环的外周和P+截止环的内周之间设置第二N+保护环来形成双保护环结构,双保护环结构可以使器件的工作温度达到125℃时也不会发生边缘击穿,从而大幅提高905nm硅雪崩光电二极管的工作温度上限。
优选地,所述π型层、P型雪崩区、N+光敏区、N+保护环和P+截止环形成于电阻率大于或等于3000Ω·cm的P型高阻硅上,所述P+衬底层的电阻率为0.001~0.002Ω·cm。采用高电阻率的P型高阻硅来加工硅雪崩光电二极管,可以有效增加器件的光吸收率,使器件获得更高的光响应度。
为了便于本领域技术人员实施,本发明还提出了一种905nm硅雪崩光电二极管制作方法,其创新在于:按如下步骤制作905nm硅雪崩光电二极管:1)提供P+衬底层和外延层;所述外延层为P型高阻硅;
2)采用磷离子注入工艺,在外延层上形成N+保护环;N+保护环结深为7~8μm,磷离子注入浓度为1020/cm3量级;
3)采用磷离子注入工艺,在外延层上N+保护环的外周形成第二N+保护环;第二N+保护环结深为1~2μm,磷离子注入浓度为1016/cm3量级;
4)采用硼离子注入工艺,在第二N+保护环的外周形成P+截止环,P+截止环结深为2~3μm,硼离子注入浓度为1018/cm3量级;
5)在外延层表面淀积一定厚度的SiO2层,然后在氮气氛围、1300℃~1500℃条件下高温推结4小时;高温推结操作结束后,去掉SiO2层;
6)采用高能离子注入工艺,在外延层上形成P型雪崩区,P型雪崩区位于N+保护环内,P型雪崩区结深为5~6mm,高能离子注入浓度为1017/cm3
7)采用砷离子注入工艺,在外延层上形成N+光敏区,N+光敏区位于N+保护环内,N+光敏区为0.1~0.5μm,砷离子注入浓度为1020/cm3量级;
8)在外延层表面淀积SiO2层,在SiO2层表面淀积Si3N4增透膜;
9)制作金属电极;
10)进行背面减薄处理。
优选地,所述P型高阻硅的电阻率大于或等于3000Ω·cm,所述P+衬底层的电阻率为0.001~0.002Ω·cm。
本发明的有益技术效果是:能大幅提高905nm硅雪崩光电二极管的工作温度上限。
附图说明
图1、本发明的结构示意图;
图中各个标记所对应的名称分别为:P+衬底层1、π型层2、P型雪崩区3、N+光敏区4、N+保护环5、P+截止环6、第二N+保护环7、电极8、Si3N4增透膜9。
具体实施方式
一种905nm硅雪崩光电二极管,包括P+衬底层1、π型层2、P型雪崩区3、N+光敏区4、N+保护环5和P+截止环6,其创新在于:在所述N+保护环5的外周和所述P+截止环6的内周之间设置有第二N+保护环7。
进一步地,所述π型层2、P型雪崩区3、N+光敏区4、N+保护环5、P+截止环6、第二N+保护环7形成于电阻率大于或等于3000Ω·cm的P型高阻硅上,所述P+衬底层1的电阻率为0.001~0.002Ω·cm。
一种905nm硅雪崩光电二极管制作方法,其创新在于:按如下步骤制作905nm硅雪崩光电二极管:1)提供P+衬底层1和外延层;所述外延层为P型高阻硅;
2)采用磷离子注入工艺,在外延层上形成N+保护环5;N+保护环5结深为7~8μm,磷离子注入浓度为1020/cm3量级;
3)采用磷离子注入工艺,在外延层上N+保护环5的外周形成第二N+保护环7;第二N+保护环7结深为1~2μm,磷离子注入浓度为1016/cm3量级;
4)采用硼离子注入工艺,在第二N+保护环7的外周形成P+截止环6,P+截止环6结深为2~3μm,硼离子注入浓度为1018/cm3量级;
5)在外延层表面淀积一定厚度的SiO2层,然后在氮气氛围、1300℃~1500℃条件下高温推结4小时;高温推结操作结束后,去掉SiO2层;
6)采用高能离子注入工艺,在外延层上形成P型雪崩区3,P型雪崩区3位于N+保护环5内,P型雪崩区3结深为5~6mm,高能离子注入浓度为1017/cm3
7)采用砷离子注入工艺,在外延层上形成N+光敏区4,N+光敏区4位于N+保护环5内,N+光敏区4为0.1~0.5μm,砷离子注入浓度为1020/cm3量级;
8)在外延层表面淀积SiO2层,在SiO2层表面淀积Si3N4增透膜;
9)制作金属电极;
10)进行背面减薄处理。
进一步地,所述P型高阻硅的电阻率大于或等于3000Ω·cm,所述P+衬底层1的电阻率为0.001~0.002Ω·cm。

Claims (4)

1.一种905nm硅雪崩光电二极管,包括P+衬底层(1)、π型层(2)、P型雪崩区(3)、N+光敏区(4)、N+保护环(5)和P+截止环(6),其特征在于:在所述N+保护环(5)的外周和所述P+截止环(6)的内周之间设置有第二N+保护环(7)。
2.根据权利要求1所述的905nm硅雪崩光电二极管,其特征在于:所述π型层(2)、P型雪崩区(3)、N+光敏区(4)、N+保护环(5)、P+截止环(6)、第二N+保护环(7)形成于电阻率大于或等于3000Ω·cm的P型高阻硅上,所述P+衬底层(1)的电阻率为0.001~0.002Ω·cm。
3.一种905nm硅雪崩光电二极管制作方法,其特征在于:按如下步骤制作905nm硅雪崩光电二极管:1)提供P+衬底层(1)和外延层;所述外延层为P型高阻硅;
2)采用磷离子注入工艺,在外延层上形成N+保护环(5);N+保护环(5)结深为7~8μm,磷离子注入浓度为1020/cm3量级;
3)采用磷离子注入工艺,在外延层上N+保护环(5)的外周形成第二N+保护环(7);第二N+保护环(7)结深为1~2μm,磷离子注入浓度为1016/cm3量级;
4)采用硼离子注入工艺,在第二N+保护环(7)的外周形成P+截止环(6),P+截止环(6)结深为2~3μm,硼离子注入浓度为1018/cm3量级;
5)在外延层表面淀积SiO2层,然后在氮气氛围、1300℃~1500℃条件下高温推结4小时;高温推结操作结束后,去掉SiO2层;
6)采用高能离子注入工艺,在外延层上形成P型雪崩区(3),P型雪崩区(3)位于N+保护环(5)内,P型雪崩区(3)结深为5~6mm,高能离子注入浓度为1017/cm3
7)采用砷离子注入工艺,在外延层上形成N+光敏区(4),N+光敏区(4)位于N+保护环(5)内,N+光敏区(4)为0.1~0.5μm,砷离子注入浓度为1020/cm3量级;
8)在外延层表面淀积SiO2层,在SiO2层表面淀积Si3N4增透膜;
9)制作金属电极;
10)进行背面减薄处理。
4.根据权利要求3所述的905nm硅雪崩光电二极管制作方法,其特征在于:所述P型高阻硅的电阻率大于或等于3000Ω·cm,所述P+衬底层(1)的电阻率为0.001~0.002Ω·cm。
CN201510003267.0A 2015-01-06 2015-01-06 905nm硅雪崩光电二极管及其制作方法 Active CN104576809B (zh)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201510003267.0A CN104576809B (zh) 2015-01-06 2015-01-06 905nm硅雪崩光电二极管及其制作方法

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201510003267.0A CN104576809B (zh) 2015-01-06 2015-01-06 905nm硅雪崩光电二极管及其制作方法

Publications (2)

Publication Number Publication Date
CN104576809A CN104576809A (zh) 2015-04-29
CN104576809B true CN104576809B (zh) 2016-08-17

Family

ID=53092440

Family Applications (1)

Application Number Title Priority Date Filing Date
CN201510003267.0A Active CN104576809B (zh) 2015-01-06 2015-01-06 905nm硅雪崩光电二极管及其制作方法

Country Status (1)

Country Link
CN (1) CN104576809B (zh)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN106356290A (zh) * 2016-10-28 2017-01-25 中国电子科技集团公司第四十四研究所 1064nm硅基雪崩探测器及其制作方法

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN203950825U (zh) * 2014-07-17 2014-11-19 温岭资发半导体有限公司 雪崩光电二极管

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
IT1393781B1 (it) * 2009-04-23 2012-05-08 St Microelectronics Rousset Fotodiodo operante in modalita' geiger con resistore di soppressione integrato e controllabile ad effetto jfet, schiera di fotodiodi e relativo procedimento di fabbricazione

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN203950825U (zh) * 2014-07-17 2014-11-19 温岭资发半导体有限公司 雪崩光电二极管

Also Published As

Publication number Publication date
CN104576809A (zh) 2015-04-29

Similar Documents

Publication Publication Date Title
CN110416335A (zh) 硅基近红外单光子雪崩二极管探测器及其制作方法
US8354324B2 (en) Mesa heterojunction phototransistor and method for making same
CN104576786B (zh) 新型零伏响应雪崩光电探测器芯片及其制作方法
KR101553817B1 (ko) 애벌란치 포토다이오드의 제조방법
CN106057958A (zh) 单光子雪崩光电二极管及其制作方法
CN103325880B (zh) 一种增强型硅基光电二极管及其制作方法
CN104576809B (zh) 905nm硅雪崩光电二极管及其制作方法
CN205376554U (zh) 一种硅光电二极管
CN106024922A (zh) 基于GeSn材料的光电晶体管及其制作方法
CN210866178U (zh) 一种集成化单向低容gpp工艺的tvs器件
CN104701420A (zh) 硅基紫外增强型光电二极管制作方法
US10686093B2 (en) Semiconductor light receiving element including si avalanche multiplication part and compound semiconductor light receiving layer
CN107195723A (zh) 一种雪崩光敏器件及其制备方法
CN109686805B (zh) 硅基高速高响应pin光电探测器及其制作方法
CN110326116B (zh) 半导体结构及其制造
CN105405913A (zh) 一种低暗电流铟镓砷探测器及其制备方法
CN115548157A (zh) 一种具有宽漂移区的双结单光子雪崩二极管及其制备方法
CN113574680B (zh) 雪崩光电探测器(变型)及其制造方法(变型)
TWI497733B (zh) 背接觸太陽能電池及其模組
CN105280551A (zh) 具有温度补偿自保护硅基apd阵列器件的制作方法
JPH02248081A (ja) アバランシェフォトダイオード及びその製造方法
WO2024092961A1 (zh) 半导体器件及其制造方法
KR20170127938A (ko) 메사형 InGaAs/InP 포토 다이오드 및 그 제조 방법
CN109713062B (zh) 一种硅雪崩光电探测芯片及其制备方法
JP7455407B2 (ja) アバランシェ光検出器(変形形態)およびこれを製造するための方法(変形形態)

Legal Events

Date Code Title Description
C06 Publication
PB01 Publication
C10 Entry into substantive examination
SE01 Entry into force of request for substantive examination
C14 Grant of patent or utility model
GR01 Patent grant