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Nondestructively decorating surface textured silicon with nanorod arrays for enhancing light harvesting
Author(s) -
Dong Wenjing,
Huang Chanyan,
Wei Tiaoxing,
Zhang Yun,
Zhang Kenan,
Sun Yan,
Chen Xin,
Dai Ning
Publication year - 2013
Publication title -
physica status solidi (a)
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.532
H-Index - 104
eISSN - 1862-6319
pISSN - 1862-6300
DOI - 10.1002/pssa.201330178
Subject(s) - nanorod , materials science , optoelectronics , layer (electronics) , deposition (geology) , atomic layer deposition , wavelength , silicon , nanotechnology , optics , paleontology , physics , sediment , biology
We demonstrate a textured surface antireflection layer containing ZnO nanorod arrays (ZNAs) for light harvesting in a broad wavelength range by a nondestructive and direct procedure based on atomic‐layer deposition and solution growth. The size and morphology of nanorod arrays can be designed according to the textured morphology. The requirements of ZNAs for mc‐Si and c‐Si cells are discussed in detail by controlling their growth conditions, while atomic‐layer deposition is also used for accurate adjustment. By the decoration of nanorod arrays, the weighted average reflectance R w decreased by more than 56%, resulting in an enhancement of external quantum efficiency and an improvement of about 3.64% for short‐circuit current density. The antireflection method will open up alternative opportunities for achieving feasible, compatible, and nondestructive nonreflecting layers towards optimal light harvesting for PV cells.