Direct Comparison of Electron Transport and Recombination Behaviors of Dye-Sensitized Solar Cells Prepared Using Different Sintering Processes
- Authors
- Li, Yuelong; Zhang, Xiaodan; Ko, Min Jae
- Issue Date
- May-2018
- Publisher
- AMER CHEMICAL SOC
- Keywords
- Flexible dye-sensitized solar cell; Electron transport and recombination; Hot compression; High-temperature sintering; Impedance; Photocurrent-voltage transient technique
- Citation
- ACS SUSTAINABLE CHEMISTRY & ENGINEERING, v.6, no.5, pp.7193 - 7198
- Indexed
- SCIE
SCOPUS
- Journal Title
- ACS SUSTAINABLE CHEMISTRY & ENGINEERING
- Volume
- 6
- Number
- 5
- Start Page
- 7193
- End Page
- 7198
- URI
- https://scholarworks.bwise.kr/hanyang/handle/2021.sw.hanyang/32961
- DOI
- 10.1021/acssuschemeng.8b01351
- ISSN
- 2168-0485
- Abstract
- Flexible dye-sensitized solar cells on plastic substrates have achieved a conversion efficiency of 8.6% with the hot compression technique (<150 degrees C). However, the value of efficiency is only 70% of that achieved using glass substrates with high-temperature sintering technique (500 degrees C). Investigating the origin of this difference is a critical step for further improving the performance of plastic dye-sensitized solar cells. In this study, an optimized ternary viscous titania paste without the addition of organic binders enables the fabrication of efficient dye-sensitized solar cells with a low-temperature process. Therefore, the electron-transport behavior of dye-sensitized solar cells can be directly compared with those prepared with the high-temperature sintering technique. In addition to the structural and optical differences, the hot compressed photoanode of dye-sensitized solar cells have an electron diffusion coefficient that is 2 times smaller and a recombination time that is 6 times shorter than those of the high-temperature sintered cells, suggesting inadequate interparticle connections and more recombination events. These results indicate that electron transport and recombination are still the key factors governing the performance of low-temperature fabricated dye-sensitized solar cells. Eventually, the flexible cell with an efficiency of 6.81% has been achieved on flexible indium tin oxide/polyethylene naphthalate substrate. Further improvements in advanced low-temperature processing or novel materials with minimized defect or grain boundaries are required.
- Files in This Item
-
Go to Link
- Appears in
Collections - 서울 공과대학 > 서울 화학공학과 > 1. Journal Articles
![qrcode](https://api.qrserver.com/v1/create-qr-code/?size=55x55&data=https://scholarworks.bwise.kr/hanyang/handle/2021.sw.hanyang/32961)
Items in ScholarWorks are protected by copyright, with all rights reserved, unless otherwise indicated.