Theoretical and Experimental Estimations of Photon Recycling Effect in Light Emitting Devices with a Metal Mirror
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概要
- 論文の詳細を見る
The photon recycling effect in light emitting devices was estimated theoretically and experimentally. It was shown from the rate equation analysis that this effect is marked when the injection carrier density is lower than 1×10^<18> cm^<-3> and the factor given by the average photon lifetime of spontaneous emission multiplied by the optical confinement factor inside the active region is larger than 100 fs. The external efficiency in light emitting diodes (LEDs) is improved by one order of magnitude if this factor is increased to 1 ps by the strong optical confinement around the active region. This theoretical estimation well agreed with the experimental result in fabricated GaInAsP/InP LEDs having a relatively wide emitting layer and a metal mirror; the efficiency became 1.6-1.8 times higher when the factor for fabricated LEDs was longer than 100 fS. An LED that exhibits a high efficiency comparable to those of laser diodes will be realized by improving the reflectivity of the metal mirror to higher than 99%.
- 社団法人応用物理学会の論文
- 1996-01-15
著者
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Koyama Fumio
Tokyo Institute Of Technology 4259 Nagatsuta
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Koyama Fumio
Research Laboratory Of Precision Machinery And Electronics Tokyo Institute Of Technology
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IGA Kenichi
Tokyo Institute of Technology, Nagatsuta Campus, Research Laboratory of Precision Machinery and Elec
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BABA Toshihiko
Yokohama National University, Department of Electrical and Computer Engineering
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BABA Toshihiko
Division of Electrical and Computer Engineering, Yokohama National University
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Iga Kenichi
Tokyo Institute Of Technology
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Baba T
Yokohama National Univ. Yokohama‐shi Jpn
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WATANABE Ryoh
Yokohama National University, Faculty of Engineering, Division of Electrical and Computer Engineerin
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ASANO Katsuhito
Yokohama National University, Faculty of Engineering, Division of Electrical and Computer Engineerin
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Koyama Fumio
Tokyo Inst. Technol. Yokohama Jpn
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Baba Toshihiko
Yokohama National University
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Watanabe Ryoh
Yokohama National University Faculty Of Engineering Division Of Electrical And Computer Engineering
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Asano Katsuhito
Yokohama National University Faculty Of Engineering Division Of Electrical And Computer Engineering
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