Scholars@Duke publication: Super transverse diffusion of minority carriers in GaxIn1-xP/GaAs double-junction tandem solar cells

Super transverse diffusion of minority carriers in GaxIn1-xP/GaAs double-junction tandem solar cells

Publication , Journal Article

Deng, Z; Wang, RX; Ning, JQ; Zheng, CC; Xu, SJ; Xing, Z; Lu, SL; Dong, JR; Zhang, BS; Yang, H

Published in: Solar Energy

December 1, 2014

In this work, remarkable transverse diffusion of minority carriers in the GaxIn1-xP top subcell of a GaxIn1-xP/GaAs double-junction tandem solar cell is revealed by the electroluminescence (EL) image surveying. As the forward bias is increased, the overall EL intensity rapidly increases, but the topographical distribution of lateral intensity becomes more uneven. By analyzing the relation between the measured EL emission intensity and diffusion parameters of electrically injected minority carriers, the transverse diffusion length of the minority carriers is determined to be ~93μm at the forward bias of 2.75V, which is 30 times larger than that of unbiased GaxIn1-xP single layer. Possible influence of such super diffusion of charge carriers on the conversion efficiency of tandem solar cells is discussed.

Duke Scholars

Author Changcheng Zheng DKU Faculty

Published In

Solar Energy

DOI

10.1016/j.solener.2014.09.017

ISSN

0038-092X

Publication Date

December 1, 2014

Volume

110

Start / End Page

214 / 220

Related Subject Headings

Energy
40 Engineering
33 Built environment and design
12 Built Environment and Design
09 Engineering

Citation

APA

Chicago

ICMJE

MLA

NLM

Deng, Z., Wang, R. X., Ning, J. Q., Zheng, C. C., Xu, S. J., Xing, Z., … Yang, H. (2014). Super transverse diffusion of minority carriers in GaxIn1-xP/GaAs double-junction tandem solar cells. Solar Energy, 110, 214–220. https://doi.org/10.1016/j.solener.2014.09.017

Deng, Z., R. X. Wang, J. Q. Ning, C. C. Zheng, S. J. Xu, Z. Xing, S. L. Lu, J. R. Dong, B. S. Zhang, and H. Yang. “Super transverse diffusion of minority carriers in GaxIn1-xP/GaAs double-junction tandem solar cells.” Solar Energy 110 (December 1, 2014): 214–20. https://doi.org/10.1016/j.solener.2014.09.017.

Deng Z, Wang RX, Ning JQ, Zheng CC, Xu SJ, Xing Z, et al. Super transverse diffusion of minority carriers in GaxIn1-xP/GaAs double-junction tandem solar cells. Solar Energy. 2014 Dec 1;110:214–20.

Deng, Z., et al. “Super transverse diffusion of minority carriers in GaxIn1-xP/GaAs double-junction tandem solar cells.” Solar Energy, vol. 110, Dec. 2014, pp. 214–20. Scopus, doi:10.1016/j.solener.2014.09.017.

Deng Z, Wang RX, Ning JQ, Zheng CC, Xu SJ, Xing Z, Lu SL, Dong JR, Zhang BS, Yang H. Super transverse diffusion of minority carriers in GaxIn1-xP/GaAs double-junction tandem solar cells. Solar Energy. 2014 Dec 1;110:214–220.

Published In

Solar Energy

DOI

10.1016/j.solener.2014.09.017

ISSN

0038-092X

Publication Date

December 1, 2014

Volume

110

Start / End Page

214 / 220

Related Subject Headings

Energy
40 Engineering
33 Built environment and design
12 Built Environment and Design
09 Engineering