High efficiency silicon nanowire/organic hybrid solar cells with two-step surface treatment
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 remov...
| Main Authors: | , , , , , , |
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| Format: | Journal Article |
| Language: | English |
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2015
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| Online Access: | https://hdl.handle.net/10356/107407 http://hdl.handle.net/10220/25462 http://dx.doi.org/10.1039/C4NR07173E |
| _version_ | 1811684143134670848 |
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| author | Wang, Hao Hong, Lei Rusli Wang, Jianxiong Jiang, Changyun Prakoso, Ari Bimo Togonal, Alienor Svietlana |
| author2 | School of Electrical and Electronic Engineering |
| author_facet | School of Electrical and Electronic Engineering Wang, Hao Hong, Lei Rusli Wang, Jianxiong Jiang, Changyun Prakoso, Ari Bimo Togonal, Alienor Svietlana |
| author_sort | Wang, Hao |
| collection | NTU |
| description | 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. |
| first_indexed | 2024-10-01T04:23:56Z |
| format | Journal Article |
| id | ntu-10356/107407 |
| institution | Nanyang Technological University |
| language | English |
| last_indexed | 2024-10-01T04:23:56Z |
| publishDate | 2015 |
| record_format | dspace |
| spelling | ntu-10356/1074072019-12-06T22:30:20Z High efficiency silicon nanowire/organic hybrid solar cells with two-step surface treatment Wang, Hao Hong, Lei Rusli Wang, Jianxiong Jiang, Changyun Prakoso, Ari Bimo Togonal, Alienor Svietlana School of Electrical and Electronic Engineering DRNTU::Engineering::Electrical and electronic engineering::Nanoelectronics 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. Accepted version 2015-04-28T01:27:17Z 2019-12-06T22:30:19Z 2015-04-28T01:27:17Z 2019-12-06T22:30:19Z 2015 2015 Journal Article 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. https://hdl.handle.net/10356/107407 http://hdl.handle.net/10220/25462 http://dx.doi.org/10.1039/C4NR07173E en Nanoscale © 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]. 20 p. application/pdf |
| spellingShingle | DRNTU::Engineering::Electrical and electronic engineering::Nanoelectronics Wang, Hao Hong, Lei Rusli Wang, Jianxiong Jiang, Changyun Prakoso, Ari Bimo Togonal, Alienor Svietlana High efficiency silicon nanowire/organic hybrid solar cells with two-step surface treatment |
| title | High efficiency silicon nanowire/organic hybrid solar cells with two-step surface treatment |
| title_full | High efficiency silicon nanowire/organic hybrid solar cells with two-step surface treatment |
| title_fullStr | High efficiency silicon nanowire/organic hybrid solar cells with two-step surface treatment |
| title_full_unstemmed | High efficiency silicon nanowire/organic hybrid solar cells with two-step surface treatment |
| title_short | High efficiency silicon nanowire/organic hybrid solar cells with two-step surface treatment |
| title_sort | high efficiency silicon nanowire organic hybrid solar cells with two step surface treatment |
| topic | DRNTU::Engineering::Electrical and electronic engineering::Nanoelectronics |
| url | https://hdl.handle.net/10356/107407 http://hdl.handle.net/10220/25462 http://dx.doi.org/10.1039/C4NR07173E |
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