Dark currents in GaInAsSb based heterojunction photodiodes with a low diameter area at low temperatures

Ahmetoglu (Afrailov) M.

OPTOELECTRONICS AND ADVANCED MATERIALS-RAPID COMMUNICATIONS, cilt.4, sa.4, ss.441-444, 2010 (SCI-Expanded) identifier identifier

  • Yayın Türü: Makale / Tam Makale
  • Cilt numarası: 4 Sayı: 4
  • Basım Tarihi: 2010
  • Dergi Adı: OPTOELECTRONICS AND ADVANCED MATERIALS-RAPID COMMUNICATIONS
  • Derginin Tarandığı İndeksler: Science Citation Index Expanded (SCI-EXPANDED), Scopus
  • Sayfa Sayıları: ss.441-444
  • Anahtar Kelimeler: Current flow mechanisms, Type II staggered-lineup heterojunctions, Type II staggered-lineup heterojunctions, II HETEROJUNCTIONS, RADIATION
  • Bursa Uludağ Üniversitesi Adresli: Evet

Özet

Current flow mechanisms have been studied for Liquid Phase Epitaxy (LPE) grown n-GaSb/n-GaInAsSb/p-GaAlAsSb heterostructures with a low sensitivity area. An experimental investigation of current-voltage characteristics has been done in the temperature range from 77-210K, and have been determined the mechanism of the flow of dark current. The qualitative comparison of experimental results with theory shows that, the high temperature region the diffusion mechanism of the current flow dominates in both, forward and reverse biases. The tunneling charge the key role at low temperatures under both forward and reverse biases.