title: Angular distribution of polarized light and its effect on light extraction efficiency in AlGaN deep-ultraviolet light-emitting diodes.
abstract: Angular distribution of polarized light and its effect on light extraction efficiency (LEE) in AlGaN deep-ultraviolet (DUV) light-emitting diodes (LEDs) are investigated in this paper. A united picture is presented to describe polarized light's emission and propagation processes. It is found that the electron-hole recombinations in AlGaN multiple quantum wells produce three kinds of angularly distributed polarized emissions and propagation process can change their intensity distributions. By investigation the change of angular distributions in 277nm and 215nm LEDs, this work reveals that LEE can be significantly enhanced by modulating the angular distributions of polarized light of DUV LEDs.
authors.forename: Xinjuan
authors.initials: X
authors.lastname: Chen
authors.forename: Cheng
authors.initials: C
authors.lastname: Ji
authors.forename: Yong
authors.initials: Y
authors.lastname: Xiang
authors.forename: Xiangning
authors.initials: X
authors.lastname: Kang
authors.forename: Bo
authors.initials: B
authors.lastname: Shen
authors.forename: Tongjun
authors.initials: T
authors.lastname: Yu