Current conduction and steady-state photoconductivity in photodiodes with bismuth titanate interlayer
Yükleniyor...
Dosyalar
Tarih
2016
Yazarlar
Dergi Başlığı
Dergi ISSN
Cilt Başlığı
Yayıncı
Elsevier Science Sa
Erişim Hakkı
info:eu-repo/semantics/closedAccess
Özet
Bismuth titanate, Bi4Ti3O12 (BiT), has proven to be a suitable candidate for electro-optical applications, therefore present study aims to report its utility as a photodiode material through current conduction and steady-state photoconductivity investigations. For this purpose, Al/p-Si diodes having thin film BiT interlayer (10 and 25 nm) were fabricated and current-voltage measurements were held in dark and under illumination. Among the samples, better current-voltage characteristics were obtained for the sample with 10 nm BiT interlayer. Deposition of BiT interlayer modified the current conduction mechanism in the forward bias region and interface-limited injection was reported for the diodes with BiT interlayer in the high forward biases. Variation of photocurrent with illumination intensity suggested a supralinear recombination process for the samples with BiT interlayer. High responsivity (2.891 A/W) and photosensitivity (7318.7) values were obtained for the sample with 10 nm BiT interlayer at 250 mW/cm(2) illumination intensity. Obtained results suggest that BiT interlayer (10 nm) can be utilized for visible light photodiode and photosensor applications. (C) 2016 Published by Elsevier B.V.
Açıklama
YILDIRIM, Mert/0000-0002-8526-1802
WOS: 000381939700047
WOS: 000381939700047
Anahtar Kelimeler
Thin films, Bismuth titanate, MFS photodiode, Current conduction, Steady-state photoconductivity
Kaynak
Thin Solid Films
WoS Q Değeri
Q2
Scopus Q Değeri
Q2
Cilt
615
