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Title: Shape-dependent conversion efficiency of Si nanowire solar cells with polygonal cross-sections

Abstract

A deeper insight into shape-dependent power conversion efficiency (PCE) of Si nanowire (SiNW) solar cells with polygonal cross-sectional shapes, including trigon, tetragon, hexagon, and circle, has been explored based on the atomic-bond-relaxation approach and detailed balance principle. It has been found that the surface effect induced by the loss-coordination atoms located at edges and surfaces, as well as the thermal effect, plays the dominant roles for the band shift and PCE of SiNWs due to the lattice strain occurrence at the self-equilibrium state. Our predictions are consistent with the available evidences, providing an important advance in the development of Si-based nanostructures for the desirable applications.

Authors:
; ;  [1]
  1. Key Laboratory of Low-Dimensional Quantum Structures and Quantum Control of Ministry of Education, Synergetic Innovation Center for Quantum Effects and Applications (SICQEA), Hunan Normal University, Changsha 410081 (China)
Publication Date:
OSTI Identifier:
22596793
Resource Type:
Journal Article
Resource Relation:
Journal Name: Journal of Applied Physics; Journal Volume: 119; Journal Issue: 22; Other Information: (c) 2016 Author(s); Country of input: International Atomic Energy Agency (IAEA)
Country of Publication:
United States
Language:
English
Subject:
71 CLASSICAL AND QUANTUM MECHANICS, GENERAL PHYSICS; 75 CONDENSED MATTER PHYSICS, SUPERCONDUCTIVITY AND SUPERFLUIDITY; ATOMS; BALANCES; CONVERSION; CROSS SECTIONS; DETAILED BALANCE PRINCIPLE; EFFICIENCY; NANOWIRES; SHAPE; SILICON; SOLAR CELLS; SURFACES

Citation Formats

He, Yan, Yu, Wangbing, and Ouyang, Gang, E-mail: gangouy@hunnu.edu.cn. Shape-dependent conversion efficiency of Si nanowire solar cells with polygonal cross-sections. United States: N. p., 2016. Web. doi:10.1063/1.4953377.
He, Yan, Yu, Wangbing, & Ouyang, Gang, E-mail: gangouy@hunnu.edu.cn. Shape-dependent conversion efficiency of Si nanowire solar cells with polygonal cross-sections. United States. doi:10.1063/1.4953377.
He, Yan, Yu, Wangbing, and Ouyang, Gang, E-mail: gangouy@hunnu.edu.cn. 2016. "Shape-dependent conversion efficiency of Si nanowire solar cells with polygonal cross-sections". United States. doi:10.1063/1.4953377.
@article{osti_22596793,
title = {Shape-dependent conversion efficiency of Si nanowire solar cells with polygonal cross-sections},
author = {He, Yan and Yu, Wangbing and Ouyang, Gang, E-mail: gangouy@hunnu.edu.cn},
abstractNote = {A deeper insight into shape-dependent power conversion efficiency (PCE) of Si nanowire (SiNW) solar cells with polygonal cross-sectional shapes, including trigon, tetragon, hexagon, and circle, has been explored based on the atomic-bond-relaxation approach and detailed balance principle. It has been found that the surface effect induced by the loss-coordination atoms located at edges and surfaces, as well as the thermal effect, plays the dominant roles for the band shift and PCE of SiNWs due to the lattice strain occurrence at the self-equilibrium state. Our predictions are consistent with the available evidences, providing an important advance in the development of Si-based nanostructures for the desirable applications.},
doi = {10.1063/1.4953377},
journal = {Journal of Applied Physics},
number = 22,
volume = 119,
place = {United States},
year = 2016,
month = 6
}
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