Journal ArticleDOI
Energy transfer in ternary blend organic solar cells: recent insights and future directions
TLDR
In this paper, the role of resonance energy transfer (RET) in enhancing the device efficiency of TBSCs is discussed and analyzed by taking a few recent examples of a TBSC.Abstract:
Resonance energy transfer (RET) can potentially improve the device efficiencies of ternary blend organic solar cells (TBSCs). However, several parameters, such as domain morphology, exciton lifetime, energy and charge transfer, influence the resulting photophysics. Owing to this, spectroscopic studies on TBSCs have not unambiguously deconvolved the role of RET in the observed enhancement of photocurrent densities, often downplaying the mechanistic aspects of the RET associated enhancement. In this perspective, we discuss and analyse the role of RET in enhancing the device efficiency by taking a few recent examples of TBSCs. Taking analogy from natural photosynthetic systems, we argue that deviations in the observed RET rates from a Forster type mechanism may be at play. We suggest new strategies to systematically correlate the Forster critical distance (R0) with increments in current density (ΔJSC) in order to gain mechanistic insights to optimize RET enhanced photocurrent for high efficiency organic solar cells.read more
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Principles Of Fluorescence Spectroscopy
TL;DR: The principles of fluorescence spectroscopy is universally compatible with any devices to read and is available in the digital library an online access to it is set as public so you can download it instantly.
Journal ArticleDOI
Small-molecular donor guest achieves rigid 18.5% and flexible 15.9% efficiency organic photovoltaic via fine-tuning microstructure morphology
TL;DR: In this paper, two small molecular donors with similar chemical structures, G17 and G19, were designed and synthesized, and the G17-containing sp3-carbon π-bridge features an amorphous orientation, whereas the silicon-substituted G19 exhibits an extremely ordered edge-on orientation.
Journal ArticleDOI
Mechanism study on organic ternary photovoltaics with 18.3% certified efficiency: from molecule to device
TL;DR: In this article , a study on the working mechanism of ternary organic photovoltaic devices based on non-fullerene acceptors is presented, focusing on the composition-dependent optoelectronic property variations in blend films and devices.
Journal ArticleDOI
Non-fullerene Acceptor Alloy Strategy Enabling Stable Ternary Polymer Solar Cells With Efficiency Of 17.74%
TL;DR: For optimizing the performance of photovoltaic devices, fabricating ternary organic solar cells (TOSCs) is a common strategy as mentioned in this paper . However, the hybrid system involves complex intermolecular interactions, which poses a challenge to...
References
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Principles of fluorescence spectroscopy
TL;DR: This book describes the fundamental aspects of fluorescence, the biochemical applications of this methodology, and the instrumentation used in fluorescence spectroscopy.
Journal ArticleDOI
Polymer photovoltaic cells : enhanced efficiencies via a network of internal donor-acceptor heterojunctions
TL;DR: In this paper, the carrier collection efficiency and energy conversion efficiency of polymer photovoltaic cells were improved by blending of the semiconducting polymer with C60 or its functionalized derivatives.
Journal ArticleDOI
A Theory of Sensitized Luminescence in Solids
TL;DR: In this article, the resonance theory of Forster, which involves only allowed transitions, is extended to include transfer by means of forbidden transitions which, it is concluded, are responsible for the transfer in all inorganic systems yet investigated.
Journal ArticleDOI
Zwischenmolekulare Energiewanderung und Fluoreszenz
TL;DR: In this article, a quantenmechanische behandlung des Ubergangs von Elektronenanregungsenergie zwischen gleichartigen Molekulen in Losung gegeben.
Journal ArticleDOI
Structural absorption by barbule microstructures of super black bird of paradise feathers
TL;DR: Physical structure is known to contribute to the appearance of bird plumage through structural color and specular reflection, but a third mechanism, structural absorption, leads to low reflectance and super black color in birds of paradise feathers.