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Time-resolved photoluminescence spectra of high-density InGaAs/AlGaAs quantum wire structures |
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| Authors: | Noriaki Tsurumachi Chang-Sik Son Tae Geun Kim Kazunori Hikosaka Kazuhiro Komori Mutsuo Ogura |
| Institution: | a National Institute of Advanced Industrial Science and Technology (AIST), Umezono,Tsukuba, Ibaraki 305-8568, Japan;b CREST-JST, Honcho, Kawaguchi, Saitama 332-0012, Japan;c Silla University, Gwaebop-Dong, Sasang-Gu, Busan, South Korea;d Kwangwoon University, Wolgye-Kong, Nowon-Gu, Seoul, South Korea |
| Abstract: | We investigated the temperature dependence of the time-resolved photoluminescence (PL) spectra of high-density InGaAs/AlGaAs quantum wire (QWR) distributed-feedback laser structure on a submicron grating. A red-shift of peak in the time-resolved PL after photo-excitation was observed due to the relaxation of the photo-generated excitons from the entire QWR to localized centers at 10 K. On the other hand, at 60 K, no red-shift in the time-resolved PL spectra was observed since the localization centers are thermally activated and the excitons are delocalized. |
| Keywords: | Author Keywords: Quantum wire Time-resolved Photoluminescence Localized exciton |
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