Role of Polycrystallinity in CdTe and CuInSe2 Photovoltaic Cells: Annual Subcontract Report, 1 April 1992 - 31 March 1993

Sites, J. R.

doi:10.2172/10131204

Title: Role of Polycrystallinity in CdTe and CuInSe2 Photovoltaic Cells: Annual Subcontract Report, 1 April 1992 - 31 March 1993

Full Record
Other Related Research

Abstract

This report describes work to conduct several investigations of thin-film polycrystalline solar cells. (1) An analysis of high-efficiency solar cells fabricated at the University of South Florida showed significant reduction in forward recombination current, and the cells were stable over a 3-month test period. (2) Transient voltage effects were documented in a large number of polycrystalline cells and were attributed to long-lived trapping states sensitive to voltage changes near one-half open-circuit voltage. (3) Collection efficiency and its voltage dependence were carefully calculated. The typical effect on photocurrent at operating voltages is about 2% for CuInSe{sub 2}, and less for other cells.

Authors:: Sites, J. R.

Publication Date:: Tue Feb 01 00:00:00 EST 1994

Research Org.:: National Renewable Energy Lab. (NREL), Golden, CO (United States)

Sponsoring Org.:: USDOE Office of Energy Efficiency and Renewable Energy (EERE)

OSTI Identifier:: 10131204

Report Number(s):: NREL/TP-451-6215
ON: DE94000293; BR: WM1020000

DOE Contract Number:: AC36-08GO28308

Resource Type:: Technical Report

Resource Relation:: Other Information: PBD: Feb 1994

Country of Publication:: United States

Language:: English

Subject:: 14 SOLAR ENERGY; SOLAR CELLS; ELECTRICAL PROPERTIES; PROGRESS REPORT; COPPER SELENIDE SOLAR CELLS; INDIUM SELENIDE SOLAR CELLS; CADMIUM TELLURIDE SOLAR CELLS; THIN FILMS; POLYCRYSTALS; EFFICIENCY; PHOTOVOLTAIC CONVERSION; GRADED BAND GAPS; ELECTRONIC STRUCTURE; photovoltaics; solar cells; copper indium diselenide; thin films; high efficiency; polycrystalline; 140501; 360602; STRUCTURE AND PHASE STUDIES

Citation Formats


                    Sites, J. R. Role of Polycrystallinity in CdTe and CuInSe2 Photovoltaic Cells: Annual Subcontract Report, 1 April 1992 - 31 March 1993.  United States: N. p., 1994. 
        Web.  doi:10.2172/10131204.

Copy to clipboard


                    Sites, J. R. Role of Polycrystallinity in CdTe and CuInSe2 Photovoltaic Cells: Annual Subcontract Report, 1 April 1992 - 31 March 1993.  United States.  https://doi.org/10.2172/10131204

Copy to clipboard


                    Sites, J. R. 1994.  
        "Role of Polycrystallinity in CdTe and CuInSe2 Photovoltaic Cells: Annual Subcontract Report, 1 April 1992 - 31 March 1993".  United States.  https://doi.org/10.2172/10131204.  https://www.osti.gov/servlets/purl/10131204.

Copy to clipboard


                    
@article{osti_10131204,

  title        = {Role of Polycrystallinity in CdTe and CuInSe2 Photovoltaic Cells: Annual Subcontract Report, 1 April 1992 - 31 March 1993},

  author       = {Sites, J. R.},

  abstractNote = {This report describes work to conduct several investigations of thin-film polycrystalline solar cells. (1) An analysis of high-efficiency solar cells fabricated at the University of South Florida showed significant reduction in forward recombination current, and the cells were stable over a 3-month test period. (2) Transient voltage effects were documented in a large number of polycrystalline cells and were attributed to long-lived trapping states sensitive to voltage changes near one-half open-circuit voltage. (3) Collection efficiency and its voltage dependence were carefully calculated. The typical effect on photocurrent at operating voltages is about 2% for CuInSe{sub 2}, and less for other cells.},

  doi          = {10.2172/10131204},

  url          = {https://www.osti.gov/biblio/10131204},
  journal      = {},
number       = ,

  volume       = ,

  place        = {United States},

  year         = {Tue Feb 01 00:00:00 EST 1994},

  month        = {Tue Feb 01 00:00:00 EST 1994}

}

Copy to clipboard

Technical Report:

View Technical Report

https://doi.org/10.2172/10131204

Save / Share:

Export Metadata

Save to My Library

Similar records in OSTI.GOV collections:

Role of Polycrystallinity in CdTe and CuInSe2 Photovoltaic Cells, Annual Subcontract Report, 1 April 1990 - 31 March 1991

Technical Report Sites, J.

The polycrystalline nature of thin-film CdTe and CuInSe{sub 2} solar cells continues to be a major factor in several individual losses that limit overall cell efficiency. This report describes progress in the quantitative separation of these losses, including both measurement and analysis procedures. It also applies these techniques to several individual cells to help document the overall progress with CdTe and CuInSe{sub 2} cells. Notably, CdTe cells from Photon Energy have reduced window photocurrent losses to 1 mA/Cm{sup 2}; those from the University of South Florida have achieved a maximum power voltage of 693 mV; and CuInSe{sub 2} cells frommore »« less
https://doi.org/10.2172/5908731

Full Text Available
Role of Polycrystallinity in CdTe and CuInSe2 Photovoltaic Cells, Annual Subcontract Report, 1 April 1991 - 31 March 1992

Technical Report Sites, J.

The limiting role of polycrystallinity in thin-film solar calls has been reduced somewhat during the past year, and efficiencies of both CdTe and CuInSe[sub 2] cells are approaching 15%. Quantitative separation of loss mechanisms shows that individual losses, with the exception of forward recombination current, can be made comparable to their single crystal counterparts. One general manifestation of the extraneous trapping states in that the voltage of all polycrystalline thin-film cells drifts upward by 10--50 mV following the onset of illumination.
https://doi.org/10.2172/6744493

Full Text Available
Role of polycrystallinity in CdTe and CuInSe{sub 2} photovoltaic cells. Annual subcontract report, 1 April 1990--31 March 1991

Technical Report Sites, J

The polycrystalline nature of thin-film CdTe and CuInSe{sub 2} solar cells continues to be a major factor in several individual losses that limit overall cell efficiency. This report describes progress in the quantitative separation of these losses, including both measurement and analysis procedures. It also applies these techniques to several individual cells to help document the overall progress with CdTe and CuInSe{sub 2} cells. Notably, CdTe cells from Photon Energy have reduced window photocurrent losses to 1 mA/Cm{sup 2}; those from the University of South Florida have achieved a maximum power voltage of 693 mV; and CuInSe{sub 2} cells frommore »« less
https://doi.org/10.2172/10107528

Full Text Available
Role of polycrystallinity in CdTe and CuInSe{sub 2} photovoltaic cells. Annual subcontract report, 1 April 1991--31 March 1992

Technical Report Sites, J

The limiting role of polycrystallinity in thin-film solar calls has been reduced somewhat during the past year, and efficiencies of both CdTe and CuInSe{sub 2} cells are approaching 15%. Quantitative separation of loss mechanisms shows that individual losses, with the exception of forward recombination current, can be made comparable to their single crystal counterparts. One general manifestation of the extraneous trapping states in that the voltage of all polycrystalline thin-film cells drifts upward by 10--50 mV following the onset of illumination.
https://doi.org/10.2172/10133048

Full Text Available
Role of Polycrystallinity in CdTe and CuInSe2 Photovoltaic Cells: Final Subcontract Report, 1 April 1990 - 30 November 1993

Technical Report Sites, J.

The report describes the exploration of several aspects of the role of polycrystallinity in the operation of CdTe, CuInSe{sub 2}, and Cu(In,Ga)Se{sub 2} solar cells. The work included the refinement of several analytical techniques, the documentation and understanding of time-dependent voltage effects, the analysis of a large number of individual cells, and significant progress toward developing a viable current-voltage model. This work was integral to the doctoral training of four students and was greatly assisted by several active collaborations within the polycrystalline thin-film solar cell community.
https://doi.org/10.2172/10170463

Full Text Available

Similar Records