Limits to the efficiency of silicon multilayer thin film solar cells

S. R. Wenham, M. A. Green, S. Edmiston, P. Campbell, L. Koschier, Christiana Honsberg, A. B. Sproul, D. Thorpe, Z. Shi, G. Heiser

Research output: Chapter in Book/Report/Conference proceedingConference contribution

12 Citations (Scopus)

Abstract

Thin film crystalline silicon solar cells can only achieve high efficiencies if light trapping can be used to give a long optical path length, while simultaneously achieving near unity collection probabilities for all generated carriers. This necessitates a supporting substrate of a foreign material, with refractive index compatible with light trapping schemes for the silicon. The resulting inability to nucleate growth of crystalline silicon films of good crystallographic quality on such foreign substrates, at present prevents the achievement of high efficiency devices using conventional single junction solar cell structures. The parallel multijunction solar cell provides a new approach for achieving high efficiencies from very poor quality material, with near unity collection probabilities for all generated carriers achieved through appropriate junction spacing. Heavy doping is used to minimise the dark saturation current contribution from the layers, therefore allowing respectable voltages. The design strategy, corresponding advantages, theoretical predictions and experimental results are presented.

Original languageEnglish (US)
Title of host publicationConference Record of the IEEE Photovoltaic Specialists Conference
Editors Anon
PublisherIEEE
Pages1234-1241
Number of pages8
Volume2
StatePublished - 1994
Externally publishedYes
EventProceedings of the 24th IEEE Photovoltaic Specialists Conference. Part 2 (of 2) - Waikoloa, HI, USA
Duration: Dec 5 1994Dec 9 1994

Other

OtherProceedings of the 24th IEEE Photovoltaic Specialists Conference. Part 2 (of 2)
CityWaikoloa, HI, USA
Period12/5/9412/9/94

Fingerprint

Multilayer films
solar cells
Silicon
unity
silicon
thin films
trapping
Crystalline materials
Silicon solar cells
Substrates
silicon films
optical paths
Refractive index
Solar cells
Doping (additives)
spacing
refractivity
saturation
Thin films
Electric potential

ASJC Scopus subject areas

  • Control and Systems Engineering
  • Condensed Matter Physics

Cite this

Wenham, S. R., Green, M. A., Edmiston, S., Campbell, P., Koschier, L., Honsberg, C., ... Heiser, G. (1994). Limits to the efficiency of silicon multilayer thin film solar cells. In Anon (Ed.), Conference Record of the IEEE Photovoltaic Specialists Conference (Vol. 2, pp. 1234-1241). IEEE.

Limits to the efficiency of silicon multilayer thin film solar cells. / Wenham, S. R.; Green, M. A.; Edmiston, S.; Campbell, P.; Koschier, L.; Honsberg, Christiana; Sproul, A. B.; Thorpe, D.; Shi, Z.; Heiser, G.

Conference Record of the IEEE Photovoltaic Specialists Conference. ed. / Anon. Vol. 2 IEEE, 1994. p. 1234-1241.

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Wenham, SR, Green, MA, Edmiston, S, Campbell, P, Koschier, L, Honsberg, C, Sproul, AB, Thorpe, D, Shi, Z & Heiser, G 1994, Limits to the efficiency of silicon multilayer thin film solar cells. in Anon (ed.), Conference Record of the IEEE Photovoltaic Specialists Conference. vol. 2, IEEE, pp. 1234-1241, Proceedings of the 24th IEEE Photovoltaic Specialists Conference. Part 2 (of 2), Waikoloa, HI, USA, 12/5/94.
Wenham SR, Green MA, Edmiston S, Campbell P, Koschier L, Honsberg C et al. Limits to the efficiency of silicon multilayer thin film solar cells. In Anon, editor, Conference Record of the IEEE Photovoltaic Specialists Conference. Vol. 2. IEEE. 1994. p. 1234-1241
Wenham, S. R. ; Green, M. A. ; Edmiston, S. ; Campbell, P. ; Koschier, L. ; Honsberg, Christiana ; Sproul, A. B. ; Thorpe, D. ; Shi, Z. ; Heiser, G. / Limits to the efficiency of silicon multilayer thin film solar cells. Conference Record of the IEEE Photovoltaic Specialists Conference. editor / Anon. Vol. 2 IEEE, 1994. pp. 1234-1241
@inproceedings{ea7284fbd0cd4e87b2e425fd851995dc,
title = "Limits to the efficiency of silicon multilayer thin film solar cells",
abstract = "Thin film crystalline silicon solar cells can only achieve high efficiencies if light trapping can be used to give a long optical path length, while simultaneously achieving near unity collection probabilities for all generated carriers. This necessitates a supporting substrate of a foreign material, with refractive index compatible with light trapping schemes for the silicon. The resulting inability to nucleate growth of crystalline silicon films of good crystallographic quality on such foreign substrates, at present prevents the achievement of high efficiency devices using conventional single junction solar cell structures. The parallel multijunction solar cell provides a new approach for achieving high efficiencies from very poor quality material, with near unity collection probabilities for all generated carriers achieved through appropriate junction spacing. Heavy doping is used to minimise the dark saturation current contribution from the layers, therefore allowing respectable voltages. The design strategy, corresponding advantages, theoretical predictions and experimental results are presented.",
author = "Wenham, {S. R.} and Green, {M. A.} and S. Edmiston and P. Campbell and L. Koschier and Christiana Honsberg and Sproul, {A. B.} and D. Thorpe and Z. Shi and G. Heiser",
year = "1994",
language = "English (US)",
volume = "2",
pages = "1234--1241",
editor = "Anon",
booktitle = "Conference Record of the IEEE Photovoltaic Specialists Conference",
publisher = "IEEE",

}

TY - GEN

T1 - Limits to the efficiency of silicon multilayer thin film solar cells

AU - Wenham, S. R.

AU - Green, M. A.

AU - Edmiston, S.

AU - Campbell, P.

AU - Koschier, L.

AU - Honsberg, Christiana

AU - Sproul, A. B.

AU - Thorpe, D.

AU - Shi, Z.

AU - Heiser, G.

PY - 1994

Y1 - 1994

N2 - Thin film crystalline silicon solar cells can only achieve high efficiencies if light trapping can be used to give a long optical path length, while simultaneously achieving near unity collection probabilities for all generated carriers. This necessitates a supporting substrate of a foreign material, with refractive index compatible with light trapping schemes for the silicon. The resulting inability to nucleate growth of crystalline silicon films of good crystallographic quality on such foreign substrates, at present prevents the achievement of high efficiency devices using conventional single junction solar cell structures. The parallel multijunction solar cell provides a new approach for achieving high efficiencies from very poor quality material, with near unity collection probabilities for all generated carriers achieved through appropriate junction spacing. Heavy doping is used to minimise the dark saturation current contribution from the layers, therefore allowing respectable voltages. The design strategy, corresponding advantages, theoretical predictions and experimental results are presented.

AB - Thin film crystalline silicon solar cells can only achieve high efficiencies if light trapping can be used to give a long optical path length, while simultaneously achieving near unity collection probabilities for all generated carriers. This necessitates a supporting substrate of a foreign material, with refractive index compatible with light trapping schemes for the silicon. The resulting inability to nucleate growth of crystalline silicon films of good crystallographic quality on such foreign substrates, at present prevents the achievement of high efficiency devices using conventional single junction solar cell structures. The parallel multijunction solar cell provides a new approach for achieving high efficiencies from very poor quality material, with near unity collection probabilities for all generated carriers achieved through appropriate junction spacing. Heavy doping is used to minimise the dark saturation current contribution from the layers, therefore allowing respectable voltages. The design strategy, corresponding advantages, theoretical predictions and experimental results are presented.

UR - http://www.scopus.com/inward/record.url?scp=0028692976&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=0028692976&partnerID=8YFLogxK

M3 - Conference contribution

VL - 2

SP - 1234

EP - 1241

BT - Conference Record of the IEEE Photovoltaic Specialists Conference

A2 - Anon, null

PB - IEEE

ER -