Structural, Electrical and Photoresponse Properties of Si-based Diode with Organic Interfacial Layer Containing Novel Cyclotriphosphazene Compound

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TATAROĞLU A., Ozen F., KORAN K., Dere A., GÖRGÜLÜ A. O., Al-Senany N., ...Daha Fazla

SILICON, cilt.10, sa.3, ss.683-691, 2018 (SCI-Expanded) identifier identifier

  • Yayın Türü: Makale / Tam Makale
  • Cilt numarası: 10 Sayı: 3
  • Basım Tarihi: 2018
  • Doi Numarası: 10.1007/s12633-016-9513-x
  • Dergi Adı: SILICON
  • Derginin Tarandığı İndeksler: Science Citation Index Expanded (SCI-EXPANDED), Scopus
  • Sayfa Sayıları: ss.683-691
  • Anahtar Kelimeler: Organic photovoltaic diode, Cyclotriphosphazene, Coumarin-phosphazene, HIGH SERIES RESISTANCE, SCHOTTKY DIODES, COUMARIN, PHOSPHAZENES, DERIVATIVES, DYE, PHOTODETECTOR, ILLUMINATION, ELECTROLYTES, TEMPERATURE
  • Gazi Üniversitesi Adresli: Evet

Özet

The electrical and photoresponse properties of an Al/p-Si/organic layer/Al diode were investigated. The organic layer containing novel 2,2-bis[spiro(7,8-dioxy4-methylcoumarin)]-4,4,6,6-bis[spiro(2',2 ''-dioxy-1',1 ''-biphenylyl)] cyclotriphosphazene compound was coated by the drop casting method on p-Si having ohmic contact. The structural characterization of the novel cyclotriphosphazene compound was confirmed by using H-1, C-13 and P-31-NMR, elemental analysis and FTIR spectroscopic techniques. The diode exhibits a photoconducting and photodiode behavior under solar light illumination. The electrical parameters such as ideality factor, barrier height and series resistance of the diode were determined from I-V characteristics. It is seen that the photocurrent of the diode under illumination is higher than the dark current. Also, the frequency dependence of capacitance (C) and conductance (G) was explained on the basis of interface states. It is evaluated that the hybrid photodiode can be used as a photosensor in organic photodetector applications.