POLYCRYSTALLINE THIN FILM SOLAR CELLS: Present Status and Future Potential
نویسندگان
چکیده
Polycrystalline thin film solar cells based on copper indium diselenide (CuInSe2) and its alloys and cadmium telluride (CdTe) appear to be the most promising candidates for largescale application of photovoltaic energy conversion because they have shown laboratoryefficiencies in excess of 15%. Heterejunction devices with n-type cadmium sulfide (CdS) films show very low minority carrier recombination at the absorber grain boundaries and at the metallurgical interface which results in high quantum efficiencies. Open circuit voltages of these devices are relatively low owing to the recombination in the space charge region in the absorber. Further improvement in efficiency can be achieved by reducing this recombination current, especially in devices based on CuInSe2 and its alloys. Low-cost manufacturing of modules requires better resolution of a number of other technical issues. For modules based on CuInSe2 and its alloys, the role of Na and higher deposition rates on device performance need to be better understood. In addition, replacing the chemical bath deposition method for CdS film deposition with an equally effective, but more environmentally acceptable process are needed. For modules based on CdTe, more fundamental understanding of the effect of chloride/oxygen treatment and the development of more reproducible and manufacturable CdTe contacting schemes are necessary.
منابع مشابه
Current Status of Polycrystalline Thin-Film PV Technologies
In the past 18 months, thin-film solar cell technologies based on CdTe and CIS have made significant technical progress. Most of the improvements have occurred at the level of solar cells, modules, systems, and reliability testing in both CdTe and CIS. Total-area efficiencies of 14.7% for a thin-film CdTe solar cell deposited on a low-cost, sodalime glass fabricated by Golden Photon, Inc; was v...
متن کاملRecent Progress and Critical Issues in Thin Film Polycrystalline Solar Cells and Modules
Thin film CdTe and CuInSe2 based solar cells have reported efficiencies of over 15% and 17% respectively for small area laboratory devices and over 10% for prototype modules. In the present article, an approach to translate laboratory results to the development of large scale module manufacturing facilities is discussed, and critical issues associated with the development of CuInSe2 and CdTe th...
متن کاملNumerical Simulation of CdS/CIGS Tandem Multi-Junction Solar Cells with AMPS-1D
Numerical modeling of polycrystalline thin-film solar cell serves as an imperative procedure to test the suitability of proposed physical clarification and to anticipate the effect of physical changes on cell performance. All in all, this must be conducted with only partial knowledge of input parameters. In this paper, we evaluated the numerical simulation of CdS/CIGS tandem multi junction sola...
متن کاملImproving the optical properties of thin film plasmonic solar cells of InP absorber layer using nanowires
In this paper, a thin-film InP-based solar cell designed and simulated. The proposed InP solar cell has a periodic array of plasmonic back-reflector, which consists of a silver layer and two silver nanowires. The indium tin oxide (ITO) layer also utilized as an anti-reflection coating (ARC) layer on top. The design creates a light-trapping structure by using a plasmonic back-reflector and an an...
متن کامل