Absorption edge and optical constants of Tl2Ga2S3Se crystals from reflection and transmission, and ellipsometric measurements

Isik M., Gasanly N.

PHYSICA B-CONDENSED MATTER, cilt.407, sa.12, ss.2229-2233, 2012 (SCI-Expanded) identifier identifier

  • Yayın Türü: Makale / Tam Makale
  • Cilt numarası: 407 Sayı: 12
  • Basım Tarihi: 2012
  • Doi Numarası: 10.1016/j.physb.2012.03.004
  • Dergi Adı: PHYSICA B-CONDENSED MATTER
  • Derginin Tarandığı İndeksler: Science Citation Index Expanded (SCI-EXPANDED), Scopus
  • Sayfa Sayıları: ss.2229-2233
  • Orta Doğu Teknik Üniversitesi Adresli: Evet

Özet

The optical properties of Tl2Ga2S3Se layered crystalline semiconductors were investigated from transmission, reflection and ellipsometric measurements. The experimental results of the room temperature transmission and reflection measurements performed in the wavelength range of 400-1100 nm showed the presence of both indirect and direct transitions in the band structure of the crystals with 2.38 and 2.62 eV band gap energies.