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- Title
Investigation of Gold Quantum Dot Enhanced Organic Thin Film Solar Cells.
- Authors
Pangdam, Apichat; Nootchanat, Supeera; Lertvachirapaiboon, Chutiparn; Ishikawa, Ryousuke; Shinbo, Kazunari; Kato, Keizo; Kaneko, Futao; Ekgasit, Sanong; Baba, Akira
- Abstract
Gold quantum dots (AuQDs) are employed as photosensitizers in organic thin-film solar cells (OSCs) to improve their photoelectric conversion properties. Three types of AuQDs with different fluorescence emission wavelengths are used: blue (B-AuQDs), green (G-AuQDs), and red (R-AuQDs). AuQDs are loaded into the poly(3,4-ethylenedioxythiophene):poly(styrene sulfonate) thin-film layer of OSCs. UV-vis spectra, atomic force microscope images, current density-voltage characteristics, and impedance spectra of the fabricated devices are measured for the three aforementioned types of AuQDs. All types of AuQDs improve the photoelectric conversion properties, and the G-AuQD-loaded OSCs exhibit the best improvement, exhibiting an efficiency increase of 10% compared with OSCs without the AuQDs. The fluorescence/photosensitization of the AuQDs plays an important role in the enhancement of the OSCs. Finite-difference time-domain simulations indicate increased electric field intensity due to a small degree of AuQDs aggregation.
- Subjects
ORGANIC thin films; QUANTUM dots; ELECTROMAGNETIC waves; ATOMIC force microscopy; LIGHT scattering; GOLD nanoparticles; MATHEMATICAL models
- Publication
Particle & Particle Systems Characterization, 2017, Vol 34, Issue 11, pn/a
- ISSN
0934-0866
- Publication type
Article
- DOI
10.1002/ppsc.201700133