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Highly transparent photoelectrochromic device based on carbon quantum dots sensitized photoanode.
- Source :
-
Solar Energy Materials & Solar Cells . May2019, Vol. 193, p372-378. 7p. - Publication Year :
- 2019
-
Abstract
- Abstract The combination of dye or quantum dots sensitized solar cell and electrochromic device has led to the realization of the photoelectrochromic device (PECD). In this study, a PECD consisted of carbon quantum dots (CQDs) sensitized photoanode, poly(3,4-(2,2-dimethylpropylenedioxy)thiophene) (PProDOT-Me 2) electrochromic film, Br-/Br 3 - with Li+ as electrolyte was fabricated, and it shows advantages of highly transparency for bleached state when compared with conventional photoelectrochromic device. As a PECD, it exhibits a reversible optical modulation under constant illumination (100 mW cm−2) by simply altering its circuit states between on and off. A high optical window of 54.6% with coloration time of 4.9 s, and bleaching time of 5.2 s was achieved at 580 nm. Additionally, stable switching for transmittance modulation after 400 cycles demonstrates its good cycle durability, exhibiting great potential in developing energy-saving applications. Graphical abstract Photoelectrochromic device based on carbon quantum dots was fabricated, achieving high optical window of 54.6% at 580 nm. fx1 Highlights • Photoelectrochromic device based on carbon quantum dots sensitized photoanode was fabricated. • Highly transparency of bleached states when compared with conventional PECD. • A high optical window of 54.6% with fast switching time could be achieved. • The optical modulation remaining stable after 400 cycles reveals good stability. [ABSTRACT FROM AUTHOR]
Details
- Language :
- English
- ISSN :
- 09270248
- Volume :
- 193
- Database :
- Academic Search Index
- Journal :
- Solar Energy Materials & Solar Cells
- Publication Type :
- Academic Journal
- Accession number :
- 134574828
- Full Text :
- https://doi.org/10.1016/j.solmat.2019.01.004