Description: Das Projekt "Thin Film Solar Cells Based on Cu(Ga,In)Se2 Chalcopyrite Semiconductors" wird vom Umweltbundesamt gefördert und von Universität Stuttgart, Institut für Physikalische Elektronik durchgeführt. Objective: The project aims to realize efficient thin film solar cells with chalcopyrite semiconductors as absorber material. Either single junction devices with optimized bangap or tandem systems are developed. The work is performed in collaboration with the Universities of Parma (Prof. Romeo), Montpellier (Prof. Savelli), Newcastle Polytechnique (Prof. Hill), and ENSC de Paris (Dr. Vedel). General Information: Cu(Ga,In)Se2 thin films are deposited by simultaneous vacuum evaporation of the single elements from special sources. Films with compositions y in the whole range of the quaternary system cugay In1-Y Se2 have been investigated. The optical bandgap varies nearly linearly with composition from 1.04 to 1.68 ev. Only p-type conductivity strongly dependent on the Cu/Ga + in ratio have been observed. Heterojunctions have been fabricated by evaporating Ga-doped (Zn, Cd)S or ZNO films onto the absorber layer. Solar cell efficiencies of cells with compositions Y =0, 0.5, 1 are 8.4, 2.7, 5.8 per cent. First results on films fabricated by selenization of metal films have demonstrated the feasibility of this possibly low-cost method.
SupportProgram
Origin: /Bund/UBA/UFORDAT
Tags: Kupfer ? Dünnschichtsolarzelle ? Absorber ? Cadmium ? Gallium ? Selen ? Solarzelle ? Zink ? Indium ? Absorption ? Alternative Energie ? Verdunstung ? Metall ? Energietechnik ? Internationale Zusammenarbeit ? Wirkungsgrad ? Halbleiter ? Chalkopyrit ? Dünnschichtmodul [Solarzelle] ? Vakuumverdampfung ?
Region: Baden-Württemberg
Bounding boxes: 9° .. 9° x 48.5° .. 48.5°
License: cc-by-nc-nd/4.0
Language: Englisch/English
Time ranges: 1986-01-01 - 1988-12-31
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