Presentation
24 August 2020 Efficient colloidal quantum dot/organic hybrids solar cells
Author Affiliations +
Abstract
Heterostructure comprising two different materials offer an extra degree of freedom to control absorption band and energy level for more efficient optoelectronic devices. Nevertheless, building the efficient charge transport platform is challenging because of the different physical and chemical nature of those. Colloidal quantum dots (CQDs) and polymer hybrid structures have steadily been studied as well, however, the rational strategy to efficiently extract charge have not been proposed so far; only exhibiting a power conversion efficiency (PCE) of 6 ~ 7 %. Here, we propose a new hybrid architecture that synergistically exploits the benefits of CQDs and organics in photovoltaics by introducing small molecules into a CQD/organic stacked structure. The small molecular bridge, mixed in polymer regime facilitates exciton dissociation and charge transfer to the CQDs layer, leading the high PCE of 13.1%.
Conference Presentation
© (2020) COPYRIGHT Society of Photo-Optical Instrumentation Engineers (SPIE). Downloading of the abstract is permitted for personal use only.
Jung-Yong Lee "Efficient colloidal quantum dot/organic hybrids solar cells", Proc. SPIE 11474, Organic, Hybrid, and Perovskite Photovoltaics XXI, 114740Z (24 August 2020); https://doi.org/10.1117/12.2570172
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KEYWORDS
Absorption

Molecular bridges

Quantum efficiency

Solar cells

Polymers

Excitons

Bridges

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