Journal Article10.1002/PIP.2289
Controlling J‐aggregate formation for increased short‐circuit current and power conversion efficiency with a squaraine donor
Susan Spencer,Harry Hu,Qimeng Li,Hyo Yang Ahn,Maher A. Qaddoura,Sheng Yao,Andronique Ioannidis,Kevin D. Belfield,Christopher J. Collison +8 more
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TL;DR: In this paper, a squaraine dye is tested for novel application in a near-infrared-active organic photovoltaic cell that is subsequently optimized to obtain a power conversion efficiency of 2.4 ± 0.3%.
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Abstract: A squaraine dye is tested for novel application in a near-infrared-active organic photovoltaic cell that is subsequently optimized to obtain a power conversion efficiency of 2.4 ± 0.3%. The optimization utilizes an Alq3 buffer layer and macroscopic structure control through the addition of co-solvents in the spin-casting process. Co-solvent addition increases the amount of aggregates present as measured through linear absorption spectroscopy, and there is a concurrent increase in both efficiency and short-circuit current. An interpretation of the greatly increased current density is presented that describes how increased J-aggregation likely increases hole mobility and, as a result, charge separation of the photogenerated excited state. Copyright © 2012 John Wiley & Sons, Ltd.
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Squaraine dyes for organic photovoltaic cells
TL;DR: Recently, squaraine (SQ) dyes used as donor materials in organic photovoltaic (OPV) cells have received increasing attention because of their simple synthetic routes, high absorption coefficients with tunable bandgaps and bandwidths in the visible-near infrared region, as well as high photochemical and thermal stabilities.
223
A Series of Squaraine Dyes: Effects of Side Chain and the Number of Hydroxyl Groups on Material Properties and Photovoltaic Performance
Guo Chen,Hisahiro Sasabe,Yusuke Sasaki,Hiroshi Katagiri,Xiao-Feng Wang,Takeshi Sano,Ziruo Hong,Ziruo Hong,Yang Yang,Junji Kido +9 more
TL;DR: In this paper, the effect of structural variations on the material properties as well as the performance of these dyes as donor materials in bulk heterojunction (BHJ) photovoltaic cells were systematically characterized using various tools.
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Nano-assemblies of J-aggregates based on a NIR dye as a multifunctional drug carrier for combination cancer therapy.
TL;DR: A novel type of nanoscale DDSs based on nano-assemblies of small molecules without involving amphiphilic polymers, promising for imaging-guided combination cancer therapy is presented.
101
Squaraine Dyes for Photovoltaic and Biomedical Applications
TL;DR: The recent advances of SQs in the photovoltaic field are comprehensively summarized including dye‐sensitized solar cells, organicSolar cells, and perovskite solar cells and the important advances as the biosensors, biological imaging, and photodynamic/photothermal therapy reagents in the biomedical field are discussed.
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Confirmation of the Origins of Panchromatic Spectra in Squaraine Thin Films Targeted for Organic Photovoltaic Devices
Nicholas J. Hestand,Chenyu Zheng,Anirudh Raju Penmetcha,Brandon Cona,Jeremy A. Cody,Frank C. Spano,Christopher J. Collison +6 more
TL;DR: In this article, a comprehensive understanding of the excited-state properties of squaraines on the basis of their molecular structure and the resulting solid-state packing is presented. And the authors make accurate assignments of the absorption spectral peaks are made based on an essential states model, expanded to include intermolecular charge transfer (ICT).
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