2024-03-29T04:49:01Z
https://niigata-u.repo.nii.ac.jp/oai
oai:niigata-u.repo.nii.ac.jp:02000454
2022-12-15T04:16:43Z
453:455
468:563:564
Improvement of Inverted Organic Solar Cells by Combination of Gold Quantum Dots and Plasmonic Grating Structure
金量子ドットとプラズモニックグレーティング構造の組み合わせによる逆型有機太陽電池の特性向上に関する研究
Kuntamung, Kulrisa
open access
inverted organic solar cells
gold quantum dots
fluorescence
metallic grating structure
grating-coupled surface plasmon resonance
plasmon-enhanced fluorescence
In this study, we improve the light-harvesting efficiency of inverted organic solar cell (OSCs) through the combination of gold quantum dots (AuQDs) and grating-coupled surface plasmon resonance (GC-SPR). The constructed solar device comprises an ITO-coated glass substrate/titanium dioxide/poly(3-hexylthiophene-2,5-diyl):phenyl-C61-butyric acid methyl ester)/poly(3,4ethylenedioxythiophene):poly(styrene sulfonate):AuQDs/silver grating structure. The AuQDs are introduced into the hole transport layer (PEDOT:PSS) to increase the absorption in the ultraviolet (UV) light and near-UV light regions, which give rise to the light harvesting improvement of the devices in accordance to fluorescence. The plasmonic grating structures are created onto the active layer surface by nanoimprinting method using a PDMS stamp to induce the GC-SPR excitation within the devices. The UV-visible spectra, impedance spectra, current density versus voltage (J-V) characteristics, and atomic force microscopy images of the fabricated devices are investigated. The fluorescence from AuQDs incorporated into the GC-SPR evanescent field on the metal grating surface improves the short-circuit current density (Jsc) and the power conversion efficiency (PCE) in comparison to those of the reference cell and the cells with individual effects from AuQDs and metallic grating structures. The designed device shows an enhancement of photovoltaic efficiency achieved by increasing a PCE value from 3.25% (reference cell) to 3.77%, exhibiting an efficiency increase of 16%. Our results suggest that the improved efficiency of the inverted OSCs is achieved due to the combination of both G-AuQDs and GC-SPR.
新大院博(工)第523号
eng
doctoral thesis
http://hdl.handle.net/10191/0002000454
https://niigata-u.repo.nii.ac.jp/records/2000454
甲第4960号
博士(工学)
2021-09-21
13101
新潟大学
Niigata University
https://niigata-u.repo.nii.ac.jp/record/2000454/files/r3ftk523.pdf
application/pdf
2.84MB
2022-05-10
https://niigata-u.repo.nii.ac.jp/record/2000454/files/r3ftk523_a.pdf
application/pdf
79.8KB
2022-05-10