Photoelectric properties of ITO/CdS/surfactant aluminum phthalocyanine/Au solar cells

Journal Article · Sat Dec 01 04:00:00 EST 1984 · J. Electrochem. Soc.; (United States)

DOI:https://doi.org/10.1149/1.2115454· OSTI ID:5886201

Lawrence, M F; Dao, L M; Dodelet, J P

A heterojunction solar cell made by sequential electrodeposition of CdS and a surfactant aluminum phthalocyanine, (SAlPc), onto ITO (Nesatron) conductive glass, has been analyzed. Barrier formation occurs upon light absorption and is related to ''doping'' of the organic pigment by trapped electrons. When the cell is illuminated with white light, all the band bending occurs in the phthalocyanine, and two mechanisms are at work in relation to current production. The optimum thickness for the CdS and SAlPc layers was found to be 4000 and 2500..cap alpha.., respectively. The photovoltaic characteristics of the optimized cell, under an illumination of 50 mWcm/sup -2/, were: J /sub sc/ = 0.33 mA cm/sup -2/, V /sub oc/ = 0.46V, ff = 0.3, and /eta/ = 0.09%. From capacitance measurements a density of N..integral.. 3 x 10/sup 17/ charge carriers/cm/sup 3/ was calculated, and the barrier parameters were: w /sub o/ ..integral.. 300..cap alpha.. and V /sub o/ ..integral.. 0.5V. To illustrate how the junction changes with ''doping'' of the organic layer by photogenerated electrons, an energy level diagram of the proposed model is presented.

• Research Organization: Institut National de la Recherche Scientifique-Energie, Varennes, Quebec
• OSTI ID: 5886201
• Journal Information: J. Electrochem. Soc.; (United States), Journal Name: J. Electrochem. Soc.; (United States) Vol. 131:12; ISSN JESOA
• Country of Publication: United States
• Language: English

Related Subjects

14 SOLAR ENERGY
140501* -- Solar Energy Conversion-- Photovoltaic Conversion
ALUMINIUM COMPOUNDS
CADMIUM COMPOUNDS
CADMIUM SULFIDE SOLAR CELLS
CADMIUM SULFIDES
CHALCOGENIDES
CHARGE CARRIERS
CHEMISTRY
DEPOSITION
DIFFUSION BARRIERS
DIRECT ENERGY CONVERTERS
DYES
ELECTRICAL PROPERTIES
ELECTROCHEMISTRY
ELECTRODEPOSITION
ELECTROLYSIS
ELECTROMAGNETIC RADIATION
ENERGY LEVELS
EQUIPMENT
FABRICATION
GLASS
HETEROCYCLIC COMPOUNDS
HETEROJUNCTIONS
INORGANIC PHOSPHORS
JUNCTIONS
LYSIS
MATHEMATICAL MODELS
MEASURING METHODS
OPTIMIZATION
ORGANIC COMPOUNDS
PHOSPHORS
PHOTOELECTRIC CELLS
PHOTOELECTRIC EFFECT
PHOTOELECTROMAGNETIC EFFECTS
PHOTOVOLTAIC CELLS
PHTHALOCYANINES
PHYSICAL PROPERTIES
RADIATIONS
SEMICONDUCTOR JUNCTIONS
SOLAR CELLS
SOLAR EQUIPMENT
SULFIDES
SULFUR COMPOUNDS
SURFACE COATING
SURFACTANTS
VISIBLE RADIATION