Hot Carrier Cooling Study of ZnCdSe Epilayers

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概要

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• The hot carrier dynamics of ZnCdSe epilayers were studied using the femtosecond time-resolved photoluminescence up-conversion technique. The hot carriers release the excess energy primarily through scattering with longitudal optical phonons. The optical phonon emission times of the hot carriers were fitted from the carrier cooling curves and found to be 40 ps for both samples with different Cd concentrations. The initial temperature $T_{\text{o}}$ was estimated below the theoretical calculation due to the fact that these hot carriers reach thermal equilibrium in a time scale faster than the experimental temporal resolution. The hot phonon effect is not prominent in the present work for the excitation density of $10^{17}$ cm-3.

• Published by the Japan Society of Applied Physics through the Institute of Pure and Applied Physicsの論文
• 2003-12-15

著者

• Jang Der-jun

  Department Of Physics And Center For Nanoscience And Nanotechnology National Sun Yat-sen University

• Chou Wu-ching

  Department Of Electrophysics National Chiao Tung University

• Yang Chu-shou

  Department Of Electrophysics National Chiao Tung University

• KUO Chie-Tong

  Department of Physics, National Sun Yat-sen University

• Lee Meng-en

  Department Of Physics National Kaoshiung Normal University

• Chou Wu-Ching

  Department of Physics, Chung Yuan Christian University, Chung-Li, Taiwan 32023, R.O.C.

• Kuo Chie-Tong

  Department of Physics, National Sun Yat-sen University, Kaoshiung, Taiwan 80441, R.O.C.

• Yang Chu-Shou

  Department of Physics, Chung Yuan Christian University, Chung-Li, Taiwan 32023, R.O.C.

• Kuo Chie-Tong

  Department of Physics and Center for Nanoscience and Nanotechnology, National Sun Yat-Sen University, 70 Lien-hai Rd. Kaohsiung 804, Taiwan, R.O.C.

• Lee Meng-En

  Department of Physics, National Kaoshiung Normal University, Kaoshiung, Taiwan 80264, R.O.C.

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