Energy gap dependence of the photocarrier generation efficiency in layered organic photoreceptors

Journal Article · Thu Aug 12 00:00:00 EDT 1993 · Journal of Physical Chemistry; (United States)

DOI:https://doi.org/10.1021/j100134a024· OSTI ID:5649263

Umeda, Minoru; Shimada, Tomoyuki; Aruga, Tamotsu; Niimi, Tatsuya; Sasaki, Masaomi ^[1]

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1. Ricoh Co., Ltd., Shizuoka (Japan)

The photocarrier generation mechanism was studied in layered-type organic photoreceptors containing triphenylamine-based trisazo pigment in the carrier generation layer (CGL). The photocarrier generation efficiency strongly depended upon a series of N,N-diphenyl-4-biphenylamine derivatives utilized in the carrier transport layer (CTL). The dependence was successfully elucidated by means of the energy gap law using the energy gap of the electrochemical oxidation-potential difference between the azo pigment and the N,N-diphenyl-4-biphenylamine derivatives. This confirms that photocarrier generation occurs at the CGL/CTL interface and is based on photoinduced electron transfer. The reorganization energy originated in the solid system and the extent of adiabaticity of the reaction are discussed. 34 refs., 3 figs., 1 tab.

• OSTI ID: 5649263
• Journal Information: Journal of Physical Chemistry; (United States), Vol. 97:32; ISSN 0022-3654
• Country of Publication: United States
• Language: English

Related Subjects

37 INORGANIC
ORGANIC
PHYSICAL AND ANALYTICAL CHEMISTRY
14 SOLAR ENERGY
AZO DYES
OXIDATION
PHOTOCHEMICAL REACTIONS
ELECTROCHEMISTRY
ELECTRON TRANSFER
ENERGY GAP
INTERFACES
PHOTOVOLTAIC CONVERSION
PIGMENTS
AZO COMPOUNDS
CHEMICAL REACTIONS
CHEMISTRY
CONVERSION
DIRECT ENERGY CONVERSION
DYES
ENERGY CONVERSION
ORGANIC COMPOUNDS
ORGANIC NITROGEN COMPOUNDS
400500* - Photochemistry
140501 - Solar Energy Conversion- Photovoltaic Conversion