Small-molecule solar cells with efficiency over 9%

Zhang, Qian; Kan, Bin; Liu, Feng; Long, Guankui; Wan, Xiangjian; Chen, Xiaoqing; Zuo, Yong; Ni, Wang; Zhang, Huijing; Li, Miaomiao; Hu, Zhicheng; Huang, Fei; Cao, Yong; Liang, Ziqi; Zhang, Mingtao; Russell, Thomas P.; Chen, Yongsheng

doi:10.1038/nphoton.2014.269

Cited by 774 publications

(628 citation statements)

References 45 publications

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“…From our observations, it may be concluded that dyes bearing the dicyanovinylene rhodanine acceptor fragment allowed a much broader absorption of the visible range of light, with electrochemical energy gaps between 1.4 and 1.5 eV, as previously reported. 22 Furthermore, it was demonstrated that a thienodiphenylamine donor fragment provided a more effective coupling with the acceptor due to the reduced dihedral angle allowed by the thiophene ring. The newly synthesized D-A-D dyes possess the necessary properties for their use in small molecule organic photovoltaics.…”

Section: Discussionmentioning

confidence: 99%

Rhodanine-based dyes absorbing in the entire visible spectrum

et al. 2017

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A series of new broad-absorbing dyes based on rhodanine derivatives conjugated with triarylamines through a fluorene backbone were synthesized. Spectroscopic and electrochemical characterizations, along with theoretical calculations, revealed interesting properties of the dyes that efficiently absorb in the entire visible spectrum Q4 .Please check this proof carefully. Our staff will not read it in detail after you have returned it.Translation errors between word-processor files and typesetting systems can occur so the whole proof needs to be read. Please pay particular attention to: tabulated material; equations; numerical data; figures and graphics; and references. If you have not already indicated the corresponding author(s) please mark their name(s) with an asterisk. Please e-mail a list of corrections or the PDF with electronic notes attached -do not change the text within the PDF file or send a revised manuscript. Corrections at this stage should be minor and not involve extensive changes. All corrections must be sent at the same time.Please bear in mind that minor layout improvements, e.g. in line breaking, table widths and graphic placement, are routinely applied to the final version.

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Section: Discussionmentioning

confidence: 99%

Rhodanine-based dyes absorbing in the entire visible spectrum

et al. 2017

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“…Currently, the highest attained efficiency in the laboratory is 13.2 % for multijunction cell [6] and 11.7 % for single junction cell [7]. Other materials gaining attention as alternative to Si based solar cells are: perovskite [8,9], graphene [10,11] and small molecules [12].…”

Section: Introductionmentioning

confidence: 99%

Computational Study on Optoelectronic Property Tuning of Oligothiophenes via Chemical Modifications for Solar Cell Applications

Franco¹

2018

Asian J. Chem.

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Chemical modifications in conjugated polymers offers the possibility of tuning its optoelectronic properties for various applications. In this report, the optoelectronic properties of chemically modified oligomers based on poly(3-hexylthiophene-2,5-diyl) (P3HT) were investigated via DFT and TDDFT. The study was carried out by replacing the hydrogen in the 3'-position of the bithiophene monomer unit with several substituents. The polymer properties were predicted via oligomer approach where n, was varied from 1 to 10. Various electronic and optical properties were calculated: EHOMO, ELUMO, EGap, first singlet excitation energy (EOpt) and exciton binding energy (EB). Several substituents: -CN and -F were observed to have significantly lower EHOMO/ELUMO values while having similar EGap compared to P3HT. Relevant solar cell characteristics were predicted and show that P3HT-CN and P3HT-F have significantly improved open-circuit voltage (VOC). The results suggest that P3HT-CN and P3HT-F may have overall better solar cell characteristics than P3HT.

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“…Fullerene derivatives as the acceptor materials have been widely used in organic solar cells (OSCs) [1][2][3][4][5] and power conversion efficiencies (PCEs) over 10% have been achieved thanks to the new donor materials design and device optimizations [6][7][8]. Recently, non-fullerene acceptors (NFAs) have challenged the fullerene derivatives dominated positions owing to the easily tuned energy levels, broadened absorptions and facile synthesis process [9][10][11][12][13][14].…”

Section: Introductionmentioning

confidence: 99%

Design and synthesis of low band gap non-fullerene acceptors for organic solar cells with impressively high Jsc over 21 mA cm_2

et al. 2017

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Three low bandgap non-fullerene acceptors based on thieno[3,2-b]thiophene fused core with different ending groups, named TTIC-M, TTIC, TTIC-F were designed and synthesized. Using a wide bandgap polymer PBDB-T as donor to form a complementary absorption in the range of 300-900 nm, high efficencies of 9.97%, 10.87% and 9.51% were achieved for TTIC-M, TTIC and TTFC-F based photovoltaic devices with impressively high short circuit current over 21 mA cm −2 .

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Small-molecule solar cells with efficiency over 9%

Cited by 774 publications

References 45 publications

Rhodanine-based dyes absorbing in the entire visible spectrum

Rhodanine-based dyes absorbing in the entire visible spectrum

Computational Study on Optoelectronic Property Tuning of Oligothiophenes via Chemical Modifications for Solar Cell Applications

Design and synthesis of low band gap non-fullerene acceptors for organic solar cells with impressively high Jsc over 21 mA cm_2

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