Proceedings of the Korean Society of Marine Engineers Conference (한국마린엔지니어링학회:학술대회논문집)

The Korean Society of Marine Engineering (한국마린엔지니어링학회)
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Development of $Blue{\sim}Green$ LEDs by Controlling Te Cluster

Te Cluster 제어에 의한 청${\sim}$녹색 발광다이오드의 개발

  • 이홍찬 (한국해양대학교 선박전자기계공학부) ;
  • 이상태 (한국해양대학교 선박전자기계공학부) ;
  • 김윤식 (한국해양대학교 전기전자공학부)
  • Published : 2005.11.01
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Abstract

Optical characteristics of excitonic blue and green emission of Te-doped ZnSSe:Te epitaxial layers, grown by molecular beam epitaxy, were investigated by photoluminescence (PL) measurements. The Te-doped ternary specimen shows strong blue or green emission (at 300K) which is assigned to $Te_1$ or $Te_n$ $(n{\geq}2)$ cluster cluster bound exciton, respectively. Bright green and blue light emitting diodes (LEDs) have been developed using ZnSSe:Te system as an active layer. The green LEDs exhibit a fairly long device lifetime (>2000 h) when operated at 3 $A/cm^2$ under CW condition at room temperature.

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