NDLI: Fabrication of Si heterojunction solar cells using P-doped Si nanocrystals embedded in SiNx films as emitters.

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Fabrication of Si heterojunction solar cells using P-doped Si nanocrystals embedded in SiNx films as emitters.

Content Provider	Europe PMC
Author	Wu, Ping-Jung Wang, Yu-Cian Chen, I-Chen
Copyright Year	2013
Abstract	Si heterojunction solar cells were fabricated on p-type single-crystal Si (sc-Si) substrates using phosphorus-doped Si nanocrystals (Si-NCs) embedded in SiNx (Si-NCs/SiNx) films as emitters. The Si-NCs were formed by post-annealing of silicon-rich silicon nitride films deposited by electron cyclotron resonance chemical vapor deposition. We investigate the influence of the N/Si ratio in the Si-NCs/SiNx films on their electrical and optical properties, as well as the photovoltaic properties of the fabricated heterojunction devices. Increasing the nitrogen content enhances the optical gap E04 while deteriorating the electrical conductivity of the Si-NCs/SiNx film, leading to an increased short-circuit current density and a decreased fill factor of the heterojunction device. These trends could be interpreted by a bi-phase model which describes the Si-NCs/SiNx film as a mixture of a high-transparency SiNx phase and a low-resistivity Si-NC phase. A preliminary efficiency of 8.6% is achieved for the Si-NCs/sc-Si heterojunction solar cell.
ISSN	19317573
Journal	Nanoscale Research Letters
Volume Number	8
PubMed Central reference number	PMC4228313
Issue Number	1
PubMed reference number	24188725
e-ISSN	1556276X
DOI	10.1186/1556-276x-8-457
Language	English
Publisher	Springer
Publisher Date	2013-11-05
Access Restriction	Open
Rights License	This is an open access article distributed under the terms of the Creative Commons Attribution License (http://creativecommons.org/licenses/by/2.0), which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited. Copyright © 2013 Wu et al.; licensee Springer.
Subject Keyword	Si nanocrystals Heterojunction solar cells Emitter
Content Type	Text
Resource Type	Article
Subject	Nanoscience and Nanotechnology Condensed Matter Physics Materials Science

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