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Effect of TiO2 compact layer and ITO texturing on DSSC efficiency improvement by chemical deposition and etching process
- Source :
- Journal of Materials Science: Materials in Electronics. 32:2618-2626
- Publication Year :
- 2021
- Publisher :
- Springer Science and Business Media LLC, 2021.
-
Abstract
- In this study, an indium tin oxide (ITO) glass surface was roughened, and liquid phase deposition (LPD) was used to create TiO2 compact layers to improve the efficiency of dye-sensitized solar cells (DSSCs). ITO glass substrates were first etched with HCl to increase the surface roughness and effectively scatter incident light into the working electrode of a DSSC. This increased the traveling path of the light and light-capturing ability of the cell, thereby enhancing the light absorbance rate. Then, LPD was conducted to create a TiO2 compact layer. The deposition reaction of a chemical liquid was induced to evenly cover the roughed ITO glass surface by using the compact layer. The LPD-TiO2 compact layer effectively inhibited charge recombination on the electrolyte/ITO interface, which enhanced the photovoltaic conversion efficiency of the DSSC. The results verified that the photovoltaic conversion efficiency of the DSSC with the roughened ITO glass improved from 4.67 to 5.05%. After the LPD-TiO2 compact layer was installed, the photovoltaic conversion efficiency was further enhanced to 5.91%, thereby achieving a 26.55% increase in efficiency. An electrochemical impedance spectroscopy revealed that the carrier lifetime increased from 7.17 to 9.34 ms, and the charge collection rate improved from 69.44 to 70.92%. This indicated that the roughened ITO glass and LPD-TiO2 compact layers were highly compatible. Using LPD to cover the uneven ITO glass surface by using an LPD-TiO2 is key to improving the light absorbance rate of DSSC and inhibiting carrier recombination.
- Subjects :
- 010302 applied physics
Working electrode
Materials science
business.industry
Carrier lifetime
Condensed Matter Physics
01 natural sciences
Atomic and Molecular Physics, and Optics
Electronic, Optical and Magnetic Materials
Dielectric spectroscopy
Indium tin oxide
Dye-sensitized solar cell
Etching (microfabrication)
0103 physical sciences
Surface roughness
Optoelectronics
Electrical and Electronic Engineering
business
Layer (electronics)
Subjects
Details
- ISSN :
- 1573482X and 09574522
- Volume :
- 32
- Database :
- OpenAIRE
- Journal :
- Journal of Materials Science: Materials in Electronics
- Accession number :
- edsair.doi...........8ef412d66451fa08841496d0aebe5591