TITLE:
Spectroscopic Analysis and Study of Charge Transport Properties for Pinacyanol Chloride-Organic Acceptor Complex as Potential Optoelectronics Material
AUTHORS:
Sagarkumar M. Agravat, Vishal R. Jain, Ajay T. Oza
KEYWORDS:
Organic Photoconductors, Charge Transfer Complex, Pinacyanol Chloride, Spectroscopy, Optoelectronic Devices, Diodes, LEDs, Solar Cells
JOURNAL NAME:
American Journal of Analytical Chemistry,
Vol.6 No.8,
July
30,
2015
ABSTRACT: Organic photoconductor, pinacyanol chloride, has been studied with
infrared spectroscopy because of its thermal activation energy (Ea) and band gap (Eg = 2Ea) lying in the infrared range. Particularly, pinacyanol
chloride and its charge transfer (CT) complexes with chloranil, DDQ, TCNQ and
TCNE as organic acceptors are studied in details. The CT complexes are having neither
two absorption edges like ternary complex having one donor and two acceptors
nor binary type with Lorentzian or Gaussian envelopes. The forbidden gap is
direct band gap except chloranil complex due to increase in molecular distance
and CT interaction. There is imperfect nesting and partial screening
determining the mid-IR envelope, which is qualitatively different from the
envelopes in binary systems. There is inverted parabola in some range below
this envelope. It is explained how infrared absorption is related with the
applications of such organic photoconductors in optoelectronic devices.