Improved Interfacial Contact for Pyramidal Texturing of Silicon Heterojunction Solar Cells

Ruijie Dai; Tengzuo Huang; Weijie Zhou; Jinpeng Yang; Hua Zhang; Fayin Yu; Anran Chen; Feng Wang; Jin Zhang; Tao Sun; Longzhou Zhang

doi:10.3390/molecules27051710

Improved Interfacial Contact for Pyramidal Texturing of Silicon Heterojunction Solar Cells

Molecules. 2022 Mar 5;27(5):1710. doi: 10.3390/molecules27051710.

Authors

Ruijie Dai^{1

2}, Tengzuo Huang^{1

2}, Weijie Zhou^{1

2}, Jinpeng Yang^{1

2}, Hua Zhang^{1

2}, Fayin Yu^{1

2}, Anran Chen^{1

2}, Feng Wang^{1

2}, Jin Zhang^{1

2}, Tao Sun^{1

2}, Longzhou Zhang²

Affiliations

¹ International Joint Research Center for Optoelectronic and Energy Materials, Yunnan University, Kunming 650091, China.
² School of Materials and Energy, Yunnan University, Kunming 650091, China.

Abstract

Reducing the surface reflectivity of silicon substrates is essential for preparing high-performance Si-based solar cells. We synthesized pyramid-nanowire-structured Si (Si-PNWs) anti-reflection substrates, which have excellent light-trapping ability (<4% reflectance). Furthermore, diethyl phthalate (DEP), a water-insoluble phthalic acid ester, was applied to optimize the Si-PNWs/PEDOT:PSS interface; the photoelectric conversion efficiency of heterojunction solar cells was shown to increase from 9.82% to 13.48%. We performed a detailed examination of the shape and optical characteristics of Si-PNWs, as well as associated photoelectric performance tests, to investigate the origin of performance improvements in Si-PNWs/PEDOT:PSS heterojunction solar cells (HSCs).

Keywords: heterojunction solar cells; interfaces; optical materials and properties; thin films.

Abstract

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