A study of optical and electrical properties of in-rich In 1-XGaXN

M. Gunes, N. Balkan, M. Yilmaz, B. Ulug, A. Ulug, W. J. Schaff

Araştırma sonucu: Kitap/Rapor/Konferans sürecindeki bölümKonferans katkısıbilirkişi

2 Alıntılar (Scopus)

Özet

We report the optoelectronic properties of In-rich In1-XGa XN samples grown on sapphire substrates by MBE. Optical properties were determined by photoluminescence spectroscopy at temperatures between T=10 K and 300 K. The results indicate that the PL peak energy has very weak temperature dependence and the optical absorption edge energy increases with increasing Ga content as previously reported in the literature. In this paper we suggest that this observation might be explained in terms of strong carrier localization due to a large compositional inhomogeneity. Hall measurements were also performed at temperatures between T=77 K and 300 K. All intentionally undoped samples were n-type and increasing Ga content reduced the electron mobility associated with reduced crystalline quality. The weak temperature dependence of the electron mobility is explained in terms of enhanced screening effect between electrons and optical phonons.

Orijinal dilİngilizce
Ana bilgisayar yayını başlığıEmerging Trends and Novel Materials in Photonics - International Commission for Optics Topical Meeting, ICO Photonics Delphi 2009
Sayfalar178-183
Sayfa sayısı6
DOI'lar
Yayın durumuYayınlanan - 2010
EtkinlikInternational Commission for Optics (ICO), Topical Meeting on "Emerging Trends and Novel Materials in Photonics", ICO-Photonics-Delphi2009 - Delphi, Greece
Süre: 7 Eki 20099 Eki 2009

Yayın serisi

AdıAIP Conference Proceedings
Hacim1288
ISSN (Basılı)0094-243X
ISSN (Elektronik)1551-7616

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???event.eventtypes.event.conference???International Commission for Optics (ICO), Topical Meeting on "Emerging Trends and Novel Materials in Photonics", ICO-Photonics-Delphi2009
Ülke/BölgeGreece
ŞehirDelphi
Periyot7/10/099/10/09

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