This article is cited in 4 papers

LEDs ($\lambda_{\mathrm{max}}$ = 3.6 $\mu$m) with cone-shaped light-emitting surfaces

E. A. Grebenshchikova, A. S. Golovin, A. N. Imenkov, S. S. Kizhaev, Yu. P. Yakovlev

Ioffe Institute, St. Petersburg

Abstract: A series of light-emitting diodes (LEDs) operating at $\lambda_{\mathrm{max}}$ = 3.6 $\mu$m are created using cone-shaped mesas with heights of 10–130 $\mu$m and concave side surfaces. The dependence of the efficiency of room-temperature ($T$ = 298 K) emission on the mesa height at various injection currents has been studied. The character of the observed dependence agrees with the results of theoretical calculations. The output radiation power of LEDs with the maximum mesa height (130 $\mu$m) at a pumping current of 220 mA amounts to 53 $\mu$W, which is 1.5 times higher than the power of LEDs with a mesa height of 10 $\mu$m.

Received: 01.10.2009

 English version: Technical Physics Letters, 2010, 36:2, 144–147

Bibliographic databases:

•