Please use this identifier to cite or link to this item: https://hdl.handle.net/10356/107407
Title: High efficiency silicon nanowire/organic hybrid solar cells with two-step surface treatment
Authors: Wang, Hao
Hong, Lei
Rusli
Wang, Jianxiong
Jiang, Changyun
Prakoso, Ari Bimo
Togonal, Alienor Svietlana
Keywords: DRNTU::Engineering::Electrical and electronic engineering::Nanoelectronics
Issue Date: 2015
Source: Wang, J., Wang, H., Prakoso, A. B., Togonal, A. S., Hong, L., & Jiang, C., et al. High efficiency silicon nanowire/organic hybrid solar cells with two-step surface treatment. Nanoscale, 7(10), 4559-4565.
Series/Report no.: Nanoscale
Abstract: A simple two-step surface treatment process is proposed to boost the efficiency of silicon nanowire/PEDOT:PSS hybrid solar cells. The Si nanowires (SiNWs) are first subjected to a low temperature ozone treatment to form a surface sacrificial oxide, followed by a HF etching process to partially remove the oxide. TEM investigation demonstrates that a clean SiNW surface is achieved after the treatment, in contrast to untreated SiNWs that have Ag nanoparticles left on the surface from the metal-catalyzed etching process that is used to form the SiNWs. The cleaner SiNW surface achieved and the thin layer of residual SiO2 on the SiNWs have been found to improve the performance of the hybrid solar cells. Overall, the surface recombination of the hybrid SiNW solar cells is greatly suppressed, resulting in a remarkably improved open circuit voltage of 0.58 V. The power conversion efficiency has also increased from about 10% to 12.4%. The two-step surface treatment method is promising in enhancing the photovoltaic performance of the hybrid silicon solar cells, and can also be applied to other silicon nanostructure based solar cells.
URI: https://hdl.handle.net/10356/107407
http://hdl.handle.net/10220/25462
DOI: 10.1039/C4NR07173E
Rights: © 2015 Royal Society of Chemistry. This is the author created version of a work that has been peer reviewed and accepted for publication by Nanoscale, Royal Society of Chemistry. It incorporates referee’s comments but changes resulting from the publishing process, such as copyediting, structural formatting, may not be reflected in this document. The published version is available at: [http://dx.doi.org/10.1039/C4NR07173E].
Fulltext Permission: open
Fulltext Availability: With Fulltext
Appears in Collections:EEE Journal Articles

Google ScholarTM

Check

Altmetric


Plumx

Items in DR-NTU are protected by copyright, with all rights reserved, unless otherwise indicated.