Interface functionalization of photoelectrodes with graphene for high performance dye-sensitized solar cells
The microstructures of photo- and counter-electrodes play critical roles in the performance of dye-sensitized solar cells (DSSCs). In particular, various interfaces, such as fluorinated-tin oxide (FTO)/TiO2, TiO2/TiO2, and TiO2/electrolyte, in DSSCs significantly affect the final power conversion ef...
Saved in:
Main Authors: | , , , , |
---|---|
Other Authors: | |
Format: | Article |
Language: | English |
Published: |
2013
|
Online Access: | https://hdl.handle.net/10356/97032 http://hdl.handle.net/10220/10422 |
Tags: |
Add Tag
No Tags, Be the first to tag this record!
|
Institution: | Nanyang Technological University |
Language: | English |
id |
sg-ntu-dr.10356-97032 |
---|---|
record_format |
dspace |
spelling |
sg-ntu-dr.10356-970322020-03-07T11:35:35Z Interface functionalization of photoelectrodes with graphene for high performance dye-sensitized solar cells Chen, Tao Hu, Weihua Song, Junling Guai, Guan Hong Li, Chang Ming School of Chemical and Biomedical Engineering Centre for Advanced Bionanosystems The microstructures of photo- and counter-electrodes play critical roles in the performance of dye-sensitized solar cells (DSSCs). In particular, various interfaces, such as fluorinated-tin oxide (FTO)/TiO2, TiO2/TiO2, and TiO2/electrolyte, in DSSCs significantly affect the final power conversion efficiency (PCE). However, research has generally focused more on the design of various nanostructured semiconducting materials with emphasis on optimizing chemical or/and physical properties, and less on these interface functionalizations for performance improvement. This work explores a new application of graphene to modify the interface of FTO/TiO2 to suppress charge recombination. In combination with interfaces functionalization of TiO2/TiO2 for low charge-transport resistance and high charge-transfer rate, the final PCE of DSSC is remarkably improved from 5.80% to 8.13%, achieving the highest efficiency in comparison to reported graphene/TiO2-based DSSCs. The method of using graphene to functionalize the surface of FTO substrate provides a better alternative method to the conventional pre-treatment through hydrolyzing TiCl4 and an approach to reduce the adverse effect of microstructural defect of conducting glass substrate for electronic devices. 2013-06-17T03:26:06Z 2019-12-06T19:38:05Z 2013-06-17T03:26:06Z 2019-12-06T19:38:05Z 2012 2012 Journal Article Chen, T., Hu, W., Song, J., Guai, G. H., & Li, C. M. (2012). Interface Functionalization of Photoelectrodes with Graphene for High Performance Dye-Sensitized Solar Cells. Advanced Functional Materials, 22(24), 5245-5250. 1616-3028 https://hdl.handle.net/10356/97032 http://hdl.handle.net/10220/10422 10.1002/adfm.201201126 en Advanced functional materials © 2012 Wiley-VCH Verlag GmbH & Co. KGaA, Weinheim. |
institution |
Nanyang Technological University |
building |
NTU Library |
country |
Singapore |
collection |
DR-NTU |
language |
English |
description |
The microstructures of photo- and counter-electrodes play critical roles in the performance of dye-sensitized solar cells (DSSCs). In particular, various interfaces, such as fluorinated-tin oxide (FTO)/TiO2, TiO2/TiO2, and TiO2/electrolyte, in DSSCs significantly affect the final power conversion efficiency (PCE). However, research has generally focused more on the design of various nanostructured semiconducting materials with emphasis on optimizing chemical or/and physical properties, and less on these interface functionalizations for performance improvement. This work explores a new application of graphene to modify the interface of FTO/TiO2 to suppress charge recombination. In combination with interfaces functionalization of TiO2/TiO2 for low charge-transport resistance and high charge-transfer rate, the final PCE of DSSC is remarkably improved from 5.80% to 8.13%, achieving the highest efficiency in comparison to reported graphene/TiO2-based DSSCs. The method of using graphene to functionalize the surface of FTO substrate provides a better alternative method to the conventional pre-treatment through hydrolyzing TiCl4 and an approach to reduce the adverse effect of microstructural defect of conducting glass substrate for electronic devices. |
author2 |
School of Chemical and Biomedical Engineering |
author_facet |
School of Chemical and Biomedical Engineering Chen, Tao Hu, Weihua Song, Junling Guai, Guan Hong Li, Chang Ming |
format |
Article |
author |
Chen, Tao Hu, Weihua Song, Junling Guai, Guan Hong Li, Chang Ming |
spellingShingle |
Chen, Tao Hu, Weihua Song, Junling Guai, Guan Hong Li, Chang Ming Interface functionalization of photoelectrodes with graphene for high performance dye-sensitized solar cells |
author_sort |
Chen, Tao |
title |
Interface functionalization of photoelectrodes with graphene for high performance dye-sensitized solar cells |
title_short |
Interface functionalization of photoelectrodes with graphene for high performance dye-sensitized solar cells |
title_full |
Interface functionalization of photoelectrodes with graphene for high performance dye-sensitized solar cells |
title_fullStr |
Interface functionalization of photoelectrodes with graphene for high performance dye-sensitized solar cells |
title_full_unstemmed |
Interface functionalization of photoelectrodes with graphene for high performance dye-sensitized solar cells |
title_sort |
interface functionalization of photoelectrodes with graphene for high performance dye-sensitized solar cells |
publishDate |
2013 |
url |
https://hdl.handle.net/10356/97032 http://hdl.handle.net/10220/10422 |
_version_ |
1681044932946558976 |