Extended investigation of sol aging effect on TiO2 electron transporting layer and performances of perovskite solar cells
Authors:
- Z. Starowicz,
- K. Gawlińska,
- J. Walter,
- R. P. Socha,
- G. Kulesza-Matlak,
- M. Lipiński
Abstract
Organic−inorganic hybrid perovskites have created significant opportunities for low-cost and high-performance solar cells. The electron transporting layer (ETL) is one of the main components of the solar cell, which selectively transports electrons and at the same time acts as a barrier for holes. This paper focuses on the ETL composed of titanium dioxide deposited by sol-gel method. In particular, perovskite solar cells with ETL from aged titanium sol revealed significant differences of short circuit current which is 8% higher than their counterpart with ETL from fresh sol. Analysis of ETL morphology by atomic force microscopy combined with electrochemical impedance spectroscopy and optical properties measurements enabled to determine the source of this diversity. Additionally, the role of roughness of transparent electrode was indicated. The in-depth material analysis revealed some disadvantages of the ETL material, originally considered as supporting higher photovoltaic performance. The results indicated several problems associated with hardly controlled aging conditions, defects and presence of residual water, strongly advocate for TiO 2 ETL form the fresh sol, which after optimization can guarantee the same good solar cell performance.
- Record ID
- CUT05a8d15d753148f8a8a891852682908e
- Publication categories
- ;
- Author
- Journal series
- Materials Research Bulletin, ISSN 0025-5408, e-ISSN 1873-4227
- Issue year
- 2018
- Vol
- 99
- Pages
- 136-143
- Other elements of collation
- rys.; tab.; wykr.; Bibliografia (na s.) - 143; Bibliografia (liczba pozycji) - 34; Oznaczenie streszczenia - Abstr.; Numeracja w czasopiśmie - Vol. 99
- Keywords in English
- titanium dioxide, thin film sol-gel, perovskite solar cells, electron transporting material, hole blocking layer
- DOI
- DOI:10.1016/j.materresbull.2017.10.035 Opening in a new tab
- URL
- http://www.sciencedirect.com/science/article/pii/S0025540817330994 Opening in a new tab
- Language
- eng (en) English
- Score (nominal)
- 35
- Additional fields
- Indeksowana w: Web of Science, Scopus
- Uniform Resource Identifier
- https://cris.pk.edu.pl/info/article/CUT05a8d15d753148f8a8a891852682908e/
- URN
urn:pkr-prod:CUT05a8d15d753148f8a8a891852682908e
* presented citation count is obtained through Internet information analysis, and it is close to the number calculated by the Publish or PerishOpening in a new tab system.