Akihiro KONISHI¹, Ryosuke YAMASE¹, Irina KHMYROVA^1*, Julia KHOLOPOVA², Evgeny POLUSHKIN², Anatoly KOVALCHUK², Vadim SIROTKIN³, and Sergei SHAPOVAL²

¹University of Aizu, Aizuwakamatsu, Fukushima 965-8580, Japan
²IMT RAS, Chernogolovka 142432, Russia
³R&D Corporation “Istok”, Fryazino 141190, Russia

(Received August 14, 2012; Revised December 10, 2012; Accepted December 14, 2012)

In this paper we develop an analytical model for the light-emitting diode (LED) with the metal p-contact patterned as an array of thin strips. The model is based on conformal mapping approach and accounts for the overlapped fringing electric fields created by the adjacent strips. We derive analytical expressions for the electric potential, current injected into the LED active region and power of light extracted via the openings in the pattern. Spatial distribution of electric potential and LED radiation pattern are calculated. Further investigations are necessary to elucidate the contribution of the side walls of the strips on the LED output performance.

Key words: light-emitting diode, patterned contact, light extraction

^*E-mail address: khmyrova@u-aizu.ac.jp