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Optoelectronic component and method for producing an optoelectronic component

專利號(hào)
US11177414B2
公開(kāi)日期
2021-11-16
申請(qǐng)人
Osram OLED GmbH(DE Regensburg)
發(fā)明人
Tansen Varghese; Stefan Illek
IPC分類
H01L33/00; H01L33/22; H01L33/30; H01L33/38
技術(shù)領(lǐng)域
region,radiation,recess,layer,body,component,exit,second,first,electrical
地域: Regensburg

摘要

An optoelectronic component may include a semiconductor body and a radiation transmissive bonding layer. The semiconductor body may include a first region of a first conductivity type, a second region of a second conductivity type, and an active region. The active region may be disposed between the first region and the second region. The first region may include a recess and a contact region adjacent to the recess. The active region may be arranged to emit electromagnetic radiation. The semiconductor body may have a first radiation exit surface at a main surface of the second region remote from the active region, and a portion of the electromagnetic radiation may exit the semiconductor body through the first radiation exit surface. The semiconductor body may include a first electrical connection layer and a second electrical connection layer where the second electrical connection layer is arranged at least partially in the recess.

說(shuō)明書(shū)

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According to at least one embodiment of the optoelectronic component, the extent of the contact region along the main extension plane of the semiconductor body corresponds to the extent of the recess along the main extension plane of the semiconductor body. The term “corresponds” means that the width of the recess does not deviate from the width of the contact region by more than 50%, such as by more than 25%, and alternatively by more than 10%. By such a corresponding expansion along the main extension plane a later lateral alignment of the recess to the contact region with the aim of a large overlapping of the recess and the contact region is simplified. The contact region can be both larger and smaller than the recess. The recess can also be adjacent to the contact region and be the same size as the contact region. Both the recess and the contact region are advantageously kept as small as possible in order to minimize electrical and optical losses due to a reduced area of the active region and increased optical absorption. The minimum size of the contact region and the recess results from the requirement to keep the contact resistance sufficiently low at a given electrical operating current with a given luminous efficacy. The overlap of the contact region and the recess can result, for example, from the manufacturing tolerances.

According to at least one embodiment of the optoelectronic component, the recess does not completely penetrate the first region of the semiconductor body. Compared to a recess completely penetrating the active region, a non-radiative recombination at the interface of the recess, especially in the active region, can be reduced advantageously. If the active region is not penetrated by the recess, the area for non-radiative recombination is advantageously reduced.

權(quán)利要求

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