Title:
OPTICAL DEVICE
Document Type and Number:
Japanese Patent JP2021170600
Kind Code:
A
Abstract:
To provide an optical device including a light receiving unit having high sensitivity for an infrared ray.SOLUTION: An optical device 10 includes a substrate 12, a light receiving unit 20, and a light emission unit 30. The light receiving unit 20 has a first mesa M1, and includes: a first semiconductor layer 21 containing a group III-V compound semiconductor of a first conductivity type; a second semiconductor layer 25 containing a group III-V compound semiconductor of a second conductivity type; and a light absorption layer 23 containing a group III-V compound semiconductor and having sensitivity for an infrared ray. The light emission unit 30 has a second mesa M2, and includes: a first part 30a formed on the substrate 12; and a second part 30b formed on the first part 30a. The first part 30a has a lamination structure the same as the first mesa M1. The second part 30b includes: a third semiconductor layer 38 containing a group III-V compound semiconductor of a first conductivity type; a fourth semiconductor layer 36 containing a group III-V compound semiconductor of a second conductivity type; and a light emission layer 37 containing a group III-V compound semiconductor and emitting an infrared ray.SELECTED DRAWING: Figure 2
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Inventors:
SUNDARARAJAN BALASEKARAN
Application Number:
JP2020073319A
Publication Date:
October 28, 2021
Filing Date:
April 16, 2020
Export Citation:
Assignee:
SUMITOMO ELECTRIC INDUSTRIES
International Classes:
H01L31/0264; H01L31/10; H01L33/02; H01L33/30
Attorney, Agent or Firm:
Yoshiki Hasegawa
Yoshiki Kuroki
High Kunio Ki
Shotaro Terasawa
Tosuke Yosuke
Yoshiki Kuroki
High Kunio Ki
Shotaro Terasawa
Tosuke Yosuke