Bifacial 8.3%/5.4% front/rear efficiency ZnO:Al/n-Si heterojunction solar cell produced by spray pyrolysisстатья

Статья опубликована в высокорейтинговом журнале

Информация о цитировании статьи получена из Scopus, Web of Science
Статья опубликована в журнале из списка Web of Science и/или Scopus
Дата последнего поиска статьи во внешних источниках: 20 апреля 2016 г.

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[1] Untila G. G., Kost T. N., Chebotareva A. B. Bifacial 8.3%/5.4% front/rear efficiency zno:al/n-si heterojunction solar cell produced by spray pyrolysis // Solar Energy. — 2016. — Vol. 127, no. 4. — P. 184–197. Using an as-deposited Al-doped ZnO (AZO) film synthesized by ultrasonic spray pyrolysis directly onto crystalline silicon (c-Si), we demonstrate a bifacial AZO/n-Si heterojunction solar cell (HJSC) with high efficiency of 8.3%/5.4% under front/rear illumination. To optimize fabrication process, the influence of substrate temperature TD (in the range 310–460 oC), annealing, and film thickness d on the film and AZO/c-Si junction properties were studied systematically. SEM, ellipsometry, EDX spectroscopy, transmission, reflection, and external quantum efficiency spectra, resistivity ρ, Hall, Suns Voc, and light I–V measurements were used for the analysis. Annealed junctions, AZO/n-Si and AZO/p-Si, as well as AZO/p-Si junction with as-deposited films showed small open-circuit voltage Voc (<300 mV). The highest Voc (∼480 mV) showed AZO/n-Si junction with as-deposited film grown at 410 oC. We employed as-deposited AZO films grown at 410 oC in AZO/(nn+)Cz-Si/In2O3:F bifacial heterojunction solar cells, which differed only in the AZO film thickness. In-creasing d from 260 to 910 nm resulted in the following: (1) the photocurrent did not changed; (2) ρ and Rsh of the film, Voc and the series resistance of the HJSCs decreased; (3) the fill factor FF and efficiency η increased (for front illumination, FF: from 29.1 to 57.3%, η: from 3.3 to 8.3%, respec-tively). At rear illumination, the best cell showed the efficiency of 5.4%. At 1-sun front illumination and 20–50–100% 1-sun rear illumination, such a cell will generate energy approaching that pro-duced by a monofacial solar cell of 9.1–10.3 12.1% efficiency. [ DOI ]

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