A solution-processable bipolar diketopyrrolopyrrole molecule used as both electron donor and acceptor for efficient organic solar cells

2015 ◽  
Vol 3 (5) ◽  
pp. 1902-1905 ◽  
Author(s):  
Hangqi Shi ◽  
Weifei Fu ◽  
Minmin Shi ◽  
Jun Ling ◽  
Hongzheng Chen
Keyword(s):  
Solar Cells ◽  
Charge Transport ◽  
Transport Properties ◽  
Electron Donor ◽  
Organic Solar Cells ◽  
Energy Levels ◽  
Donor And Acceptor ◽  
Solution Processable ◽  
Electron Donor And Acceptor ◽  
Bipolar Charge

A DPP molecule has appropriate energy levels and bipolar charge-transport properties for both donor and acceptor in OSCs.

New solution processed bulk-heterojunction organic solar cells based on a triazine-bridged porphyrin dyad as electron donor

RSC Advances ◽  
2014 ◽  
Vol 4 (92) ◽  
pp. 50819-50827 ◽  
Author(s):  
Ganesh D. Sharma ◽  
Galateia E. Zervaki ◽  
Panagiotis Angaridis ◽  
Athanassios G. Coutsolelos
Keyword(s):  
Solar Cells ◽  
Active Layer ◽  
Electron Donor ◽  
Organic Solar Cells ◽  
Bulk Heterojunction ◽  
Solution Processed ◽  
Zinc Porphyrin ◽  
Donor And Acceptor ◽  
Electron Donor And Acceptor ◽  
Covalently Linked

An unsymmetrical porphyrin dyad (ZnP)-[triazine-Npip]-(ZnPCOOH) consisting of two zinc-porphyrin units covalently linked to a peridine-containing triazine group has been used with PC71BM as electron donor and acceptor, respectively, for the active layer of solution-processed BHJ organic solar cells.

Study Phase Separation of Donor: Acceptor in Inkjet Printed Thin Films of Bulk Heterojunction Organic Solar Cells Using AFM Phase Imaging

2011 ◽  
Vol 364 ◽  
pp. 465-469 ◽  
Author(s):  
Vivi Fauzia ◽  
Akrajas Ali Umar ◽  
Muhamad Mat Salleh ◽  
Muhammad Yahaya
Keyword(s):  
Thin Films ◽  
Solar Cells ◽  
Phase Separation ◽  
Electron Donor ◽  
Organic Solar Cells ◽  
Bulk Heterojunction ◽  
Study Phase ◽  
Phase Imaging ◽  
Donor And Acceptor ◽  
Electron Donor And Acceptor

This paper reports an application of Atomic Force Microscopy (AFM) phase imaging to observe the phase separation between electron donor and acceptor materials in bulk heterojunction organic solar cells. The solar cells were fabricated using inkjet printed thin films of blended poly (3-octylthiophene-2,5-diyl)(P3OT) and (6,6)-phenyl C71 butyric acid methyl ester (PC71BM) as donor and acceptor materials respectively. The content PC71BM in the blended was varying from 25, 50 and 75 wt %. The AFM phase images of the thin film which contains 25 wt % PC71BM indicated that the acceptor molecules, PC71BM, are well distributed in the polymer chain of donor material, P3OT. The solar cell contains this film has the highest generated photocurrent. Hence, the phase separation between electron donor and acceptor materials in bulk heterojunction organic solar cells is one essential aspect that influences generation of photocurrent.

Regulating the optoelectronic properties of small molecule donors with multiple alternative electron-donor and acceptor units for organic solar cells

2018 ◽  
Vol 6 (17) ◽  
pp. 8101-8108 ◽  
Author(s):  
Yuan Zhao ◽  
Huan Wang ◽  
Weixuan Zeng ◽  
Shengpeng Xia ◽  
Feng Zhou ◽  
...  
Keyword(s):  
Solar Cells ◽  
Small Molecule ◽  
Electron Donor ◽  
Organic Solar Cells ◽  
Optoelectronic Properties ◽  
Structure Property ◽  
Donor And Acceptor ◽  
Multiple Alternative ◽  
Electron Donor And Acceptor ◽  
Property Performance

Small molecule donors with multiple alternative electron-donor and acceptor units were synthesized via C–H functionalization with the structure–property–performance relationship investigated.

scholarly journals Modulated Photocurrent Spectroscopy for Determination of Electron and Hole Mobilities in Working Organic Solar Cells

2019 ◽  
Vol 9 (1) ◽  
Author(s):  
Hiroki Nojima ◽  
Takashi Kobayashi ◽  
Takashi Nagase ◽  
Hiroyoshi Naito
Keyword(s):  
Solar Cells ◽  
Organic Solar Cells ◽  
Power Conversion ◽  
Physical Constant ◽  
Mixing Ratio ◽  
Photocurrent Spectroscopy ◽  
Donor And Acceptor ◽  
Device Structures ◽  
Electron Donor And Acceptor

AbstractCarrier drift mobility is an important physical constant in the charge transport process of organic solar cells (OSCs). Although time-of-flight and space-charge-limited current techniques have been frequently utilized for mobility measurements, the validity of a new method using modulation photocurrent spectroscopy is discussed in this contribution. The advantages of this method are its applicability to working OSCs with optimized device structures and the simultaneous determination of the electron and hole mobilities. These features make it possible to study the relation between the mobility balance and the solar cell characteristics, such as the power conversion efficiency, using only a single working OSC; hence, it is not necessary to fabricate electron-only and hole-only devices for mobility measurements. After carrying out numerical simulations to examine the validity of this method for mobility determination, the dependence of the mobility balance on the mixing ratio of the electron-donor and –acceptor materials is presented.

scholarly journals Covalently Linked Donor-Acceptor Dyad for Efficient Single Material Organic Solar Cells

2019 ◽  
Author(s):  
Sebastian Lucas ◽  
Tim Leydecker ◽  
P. Samorì ◽  
Elena Mena Osteritz ◽  
Peter Baeuerle
Keyword(s):  
Solar Cells ◽  
Charge Transport ◽  
Organic Solar Cells ◽  
Energy Levels ◽  
Power Conversion ◽  
Frontier Orbitals ◽  
Donor Acceptor ◽  
Covalently Linked ◽  
Simplified Solution ◽  
Single Material

A novel covalently linked donor-acceptor dyad comprising a dithienopyrrol-based oligomeric donor and a fullerene acceptor was synthesized and characterized. The concomitant effect of favorable optoelectronic properties, energy levels of the frontier orbitals, and ambipolar charge transport enabled the application of the dyad in simplified solution-processed single material organic solar cells reaching a power conversion efficiency of 3.4%.<br><br><br>

Observing long-range non-fullerene backbone ordering in real-space to improve charge transport properties of organic solar cells

2021 ◽  
Author(s):  
Zhaozhao Bi ◽  
Kai Chen ◽  
Lu Gou ◽  
Yuan Guo ◽  
Xiaobo Zhou ◽  
...  
Keyword(s):  
Solar Cells ◽  
Charge Transport ◽  
Transport Properties ◽  
Long Range ◽  
Organic Solar Cells ◽  
Real Space ◽  
Solid Film

To understand the dominance of 2,2′-((2Z,2′Z)-((12,13-bis(2-ethylhexyl)-3,9-diundecyl-12,13-dihydro-[1,2,5]thiadiazolo[3,4-e]thieno[2,"3′’:4’,5′]thieno[2′,3′:4,5]pyrrolo[3,2-g]thieno[2′,3′:4,5]thieno[3,2-b]indole-2,10-diyl)bis(methanylylidene))bis(5,6-difluoro-3-oxo-2,3-dihydro-1H-indene-2,1-diylidene))dimalononitrile (Y6) and its derivatives leading to the rapid efficiency rise of organic solar cells (OSCs), solid film structures are of significant importance. Here, we...

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