Bandtail Limits to Solar Conversion Efficiencies in Amorphous Silicon Solar Cells

K. Zhu; J. Yang; W. Wang; E. A. Schiff; J. Liang; S. Guha

doi:10.1557/proc-762-a3.2

Bandtail Limits to Solar Conversion Efficiencies in Amorphous Silicon Solar Cells

K. Zhu, J. Yang, W. Wang, E. A. Schiff, J. Liang, S. Guha

Department of Physics

Research output: Contribution to journal › Conference Article › peer-review

14 Scopus citations

Abstract

We describe a model for a-Si:H based pin solar cells derived primarily from valence bandtail properties. We show how hole drift-mobility measurements and measurements of the temperature-dependence of the open-circuit voltage V_OC can be used to estimate the parameters, and we present V _OC(T) measurements. We compared the power density under solar illumination calculated with this model with published results for as-deposited a-Si:H solar cells. The agreement is within 4% for a range of thicknesses, suggesting that the power from as-deposited cells is close to the bandtail limit.

Original language	English (US)
Pages (from-to)	297-302
Number of pages	6
Journal	Materials Research Society Symposium - Proceedings
Volume	762
DOIs	https://doi.org/10.1557/proc-762-a3.2
State	Published - 2003
Event	Materials Research Proceedings: Amorphous and Nanocrystalline Silicon-Based Films - 2003 - San Francisco, CA, United States Duration: Apr 22 2003 → Apr 25 2003

ASJC Scopus subject areas

General Materials Science
Condensed Matter Physics
Mechanics of Materials
Mechanical Engineering

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title = "Bandtail Limits to Solar Conversion Efficiencies in Amorphous Silicon Solar Cells",

abstract = "We describe a model for a-Si:H based pin solar cells derived primarily from valence bandtail properties. We show how hole drift-mobility measurements and measurements of the temperature-dependence of the open-circuit voltage VOC can be used to estimate the parameters, and we present V OC(T) measurements. We compared the power density under solar illumination calculated with this model with published results for as-deposited a-Si:H solar cells. The agreement is within 4% for a range of thicknesses, suggesting that the power from as-deposited cells is close to the bandtail limit.",

author = "K. Zhu and J. Yang and W. Wang and Schiff, {E. A.} and J. Liang and S. Guha",

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TY - JOUR

T1 - Bandtail Limits to Solar Conversion Efficiencies in Amorphous Silicon Solar Cells

AU - Zhu, K.

AU - Yang, J.

AU - Wang, W.

AU - Schiff, E. A.

AU - Liang, J.

AU - Guha, S.

PY - 2003

Y1 - 2003

N2 - We describe a model for a-Si:H based pin solar cells derived primarily from valence bandtail properties. We show how hole drift-mobility measurements and measurements of the temperature-dependence of the open-circuit voltage VOC can be used to estimate the parameters, and we present V OC(T) measurements. We compared the power density under solar illumination calculated with this model with published results for as-deposited a-Si:H solar cells. The agreement is within 4% for a range of thicknesses, suggesting that the power from as-deposited cells is close to the bandtail limit.

AB - We describe a model for a-Si:H based pin solar cells derived primarily from valence bandtail properties. We show how hole drift-mobility measurements and measurements of the temperature-dependence of the open-circuit voltage VOC can be used to estimate the parameters, and we present V OC(T) measurements. We compared the power density under solar illumination calculated with this model with published results for as-deposited a-Si:H solar cells. The agreement is within 4% for a range of thicknesses, suggesting that the power from as-deposited cells is close to the bandtail limit.

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VL - 762

SP - 297

EP - 302

JO - Materials Research Society Symposium - Proceedings

JF - Materials Research Society Symposium - Proceedings

T2 - Materials Research Proceedings: Amorphous and Nanocrystalline Silicon-Based Films - 2003

Y2 - 22 April 2003 through 25 April 2003

ER -

Bandtail Limits to Solar Conversion Efficiencies in Amorphous Silicon Solar Cells

Abstract

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