title: Air-Hybrid Distributed Bragg Reflector Structure for Improving the Light Output Power in AlGalnP-Based LEDs.
abstract: We investigated air gap-induced hybrid distributed Bragg reflectors (AH-DBRs) for use in high brightness and reliable AlGalnP-based light emitting diodes (LEDs). An air gap was inserted into the side of DBRs by selectively etching the Al(x),Ga1-xAs DBR structures. With the AH-DBR structures, the optical output power of LEDs was enhanced by 15% compared to LEDs having conventional DBRs, due to the effective reflection of obliquely incident light by the air gap structures. In addition, the electrical characteristics showed that the AH-DBR LED is a desirable structure for reducing the leakage current, as it suppresses unwanted surface recombinations.
authors.forename: Hwa Sub
authors.initials: HS
authors.lastname: Oh
authors.forename: Ho-Soung
authors.initials: HS
authors.lastname: Ryu
authors.forename: Sueng Ho
authors.initials: SH
authors.lastname: Park
authors.forename: Tak
authors.initials: T
authors.lastname: Jeong
authors.forename: Young Jin
authors.initials: YJ
authors.lastname: Kim
authors.forename: Hyung Joo
authors.initials: HJ
authors.lastname: Lee
authors.forename: Young Dae
authors.initials: YD
authors.lastname: Cho
authors.forename: Joon-Seop
authors.initials: JS
authors.lastname: Kwak
authors.forename: Jong Hyeob
authors.initials: JH
authors.lastname: Baek