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Electron‐Affinity‐Triggered Variations on the Optical and Electrical Properties of Dye Molecules Enabling Highly Efficient Dye‐Sensitized Solar Cells
Author(s) -
Liu Yuhang,
Cao Yiming,
Zhang Weiwei,
Stojanovic Marko,
Dar M. Ibrahim,
Péchy Péter,
Saygili Yasemin,
Hagfeldt Anders,
Zakeeruddin Shaik Mohammed,
Grätzel Michael
Publication year - 2018
Publication title -
angewandte chemie international edition
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 5.831
H-Index - 550
eISSN - 1521-3773
pISSN - 1433-7851
DOI - 10.1002/anie.201808609
Subject(s) - dye sensitized solar cell , photovoltaic system , materials science , optoelectronics , energy conversion efficiency , open circuit voltage , electrolyte , fabrication , fluorescence , electron , solar cell , voltage , chemistry , electrode , optics , physics , electrical engineering , quantum mechanics , engineering , medicine , alternative medicine , pathology
The synthesis, characterization, and photovoltaic performance of a series of indacenodithiophene (IDT)‐based D ‐π‐A organic dyes with varying electron‐accepting units is presented. By control of the electron affinity, perfectly matching energy levels were achieved with a copper(I/II)‐based redox electrolyte, reaching a high open‐circuit voltage (>1.1 V) while harvesting a large fraction of solar photons at the same time. Besides achieving high power conversion efficiencies (PCEs) for dye‐sensitized solar cells (DSCs), that is, 11.2 % under standard AM 1.5 G sunlight, and 28.4 % under a 1000 lux fluorescent light tube, this work provides a possible method for the design and fabrication of low‐cost highly efficient DSCs.
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