scholarly journals Linking Vertical Bulk-Heterojunction Composition and Transient Photocurrent Dynamics in Organic Solar Cells with Solution-Processed MoOxContact Layers

2013 ◽  
Vol 4 (5) ◽  
pp. 1301290 ◽  
Author(s):  
Bertrand J. Tremolet de Villers ◽  
Roderick C. I. MacKenzie ◽  
Jacek J. Jasieniak ◽  
Neil D. Treat ◽  
Michael L. Chabinyc
Keyword(s):  
Solar Cells ◽  
Organic Solar Cells ◽  
Bulk Heterojunction ◽  
Solution Processed ◽  
Transient Photocurrent

Furan-bridged thiazolo [5,4-d]thiazole based D–π–A–π–D type linear chromophore for solution-processed bulk-heterojunction organic solar cells

RSC Advances ◽  
2015 ◽  
Vol 5 (9) ◽  
pp. 6286-6293 ◽  
Author(s):  
M. Nazim ◽  
Sadia Ameen ◽  
M. Shaheer Akhtar ◽  
Hyung-Kee Seo ◽  
Hyung-Shik Shin
Keyword(s):  
Solar Cells ◽  
Small Molecule ◽  
Organic Solar Cells ◽  
Bulk Heterojunction ◽  
Solution Processed ◽  
Organic Chromophore

Novel furan-bridged thiazolo[5,4-d]thiazole based π-conjugated organic chromophore (RFTzR) was formulated and utilized for the fabrication of solution-processed small molecule organic solar cells (SMOSCs).

scholarly journals Planar D-π-A Configured Dimethoxy Vinylbenzene Based Small Organic Molecule for Solution-Processed Bulk Heterojunction Organic Solar Cells

2020 ◽  
Vol 10 (17) ◽  
pp. 5743
Author(s):  
Shabaz Alam ◽  
M. Shaheer Akhtar ◽  
Abdullah ◽  
Eun-Bi Kim ◽  
Hyung-Shik Shin ◽  
...  
Keyword(s):  
Solar Cells ◽  
Band Gap ◽  
Power Conversion Efficiency ◽  
Organic Solar Cells ◽  
Organic Molecule ◽  
Bulk Heterojunction ◽  
Power Conversion ◽  
Solution Processed ◽  
Small Organic Molecule ◽  
Donor Material

A new and effective planar D-π-A configured small organic molecule (SOM) of 2-5-(3,5-dimethoxystyryl)thiophen-2-yl)methylene)-1H-indene-1,3(2H)-dione, abbreviated as DVB-T-ID, was synthesized using 1,3-indanedione acceptor and dimethoxy vinylbenzene donor units, connected through a thiophene π-spacer. The presence of a dimethoxy vinylbenzene unit and π-spacer in DVB-T-ID significantly improved the absorption behavior by displaying maximum absorbance at ~515 nm, and the reasonable band gap was estimated as ~2.06 eV. The electronic properties revealed that DVB-T-ID SOMs exhibited promising HOMO (−5.32 eV) and LUMO (−3.26 eV). The synthesized DVB-T-ID SOM was utilized as donor material for fabricating solution-processed bulk heterojunction organic solar cells (BHJ-OSCs) and showed a reasonable power conversion efficiency (PCE) of ~3.1% with DVB-T-ID:PC61BM (1:2, w/w) active layer. The outcome of this work clearly reflects that synthesized DVB-T-ID based on 1,3-indanedione units is a promising absorber (donor) material for BHJ-OSCs.

Benzoselenadiazole‐core asymmetric D‐A‐A small molecule for solution processed bulk heterojunction organic solar cells

2020 ◽  
Vol 44 (14) ◽  
pp. 12100-12111
Author(s):  
Abdullah ◽  
Eun‐Bi Kim ◽  
M. Shaheer Akhtar ◽  
Hyung‐Shik Shin ◽  
Sadia Ameen
Keyword(s):  
Solar Cells ◽  
Small Molecule ◽  
Organic Solar Cells ◽  
Bulk Heterojunction ◽  
Solution Processed

A mono(carboxy)porphyrin-triazine-(bodipy)2triad as a donor for bulk heterojunction organic solar cells

2015 ◽  
Vol 3 (24) ◽  
pp. 6209-6217 ◽  
Author(s):  
Ganesh D. Sharma ◽  
S. A. Siddiqui ◽  
Agapi Nikiforou ◽  
Galateia E. Zervaki ◽  
Irene Georgakaki ◽  
...  
Keyword(s):  
Solar Cells ◽  
Methyl Ester ◽  
Butyric Acid ◽  
Organic Solar Cells ◽  
Bulk Heterojunction ◽  
Acid Methyl Ester ◽  
Solution Processed ◽  
Acid Methyl ◽  
Butyric Acid Methyl Ester

A mono(carboxy)porphyrin-triazine-(bodipy)2triad(PorCOOH)(BDP)2has been used as a donor with ([6,6]-phenyl C71butyric acid methyl ester) (PC71BM) as an acceptor, in BHJ - solution processed organic solar cells.

Symmetrical and unsymmetrical triphenylamine based diketopyrrolopyrroles and their use as donors for solution processed bulk heterojunction organic solar cells

RSC Advances ◽  
2016 ◽  
Vol 6 (102) ◽  
pp. 99685-99694 ◽  
Author(s):  
Yuvraj Patil ◽  
Rajneesh Misra ◽  
F. C. Chen ◽  
M. L. Keshtov ◽  
Ganesh D. Sharma
Keyword(s):  
Solar Cells ◽  
Small Molecules ◽  
Organic Solar Cells ◽  
Bulk Heterojunction ◽  
Coupling Reaction ◽  
Cross Coupling ◽  
Solution Processed ◽  
Cross Coupling Reaction

Two small molecules DPP3 (D–π–A) and DPP4 (D–π–A–π–D) with triphenylamine (TPA) donors and diketopyrrolopyrrole (DPP) acceptors linked with ethyne linkers were designed and synthesized by the Pd-catalyzed Sonogashira cross-coupling reaction.

scholarly journals Optimization of solution-processed oligothiophene:fullerene based organic solar cells by using solvent additives

2013 ◽  
Vol 4 ◽  
pp. 680-689 ◽  
Author(s):  
Gisela L Schulz ◽  
Marta Urdanpilleta ◽  
Roland Fitzner ◽  
Eduard Brier ◽  
Elena Mena-Osteritz ◽  
...  
Keyword(s):  
Solar Cells ◽  
Organic Solar Cells ◽  
Bulk Heterojunction ◽  
Solution Processed ◽  
Heterojunction Solar Cells ◽  
Force Microscopy ◽  
Vacuum Technology ◽  
Atomic Force ◽  
Donor And Acceptor ◽  
Conversion Efficiencies

The optimization of solution-processed organic bulk-heterojunction solar cells with the acceptor-substituted quinquethiophene DCV5T-Bu 4 as donor in conjunction with PC61BM as acceptor is described. Power conversion efficiencies up to 3.0% and external quantum efficiencies up to 40% were obtained through the use of 1-chloronaphthalene as solvent additive in the fabrication of the photovoltaic devices. Furthermore, atomic force microscopy investigations of the photoactive layer gave insight into the distribution of donor and acceptor within the blend. The unique combination of solubility and thermal stability of DCV5T-Bu 4 also allows for fabrication of organic solar cells by vacuum deposition. Thus, we were able to perform a rare comparison of the device characteristics of the solution-processed DCV5T-Bu 4 :PC61BM solar cell with its vacuum-processed DCV5T-Bu 4 :C60 counterpart. Interestingly in this case, the efficiencies of the small-molecule organic solar cells prepared by using solution techniques are approaching those fabricated by using vacuum technology. This result is significant as vacuum-processed devices typically display much better performances in photovoltaic cells.

Crystallization-Induced Phase Separation in Solution-Processed Small Molecule Bulk Heterojunction Organic Solar Cells

2014 ◽  
Vol 24 (23) ◽  
pp. 3543-3550 ◽  
Author(s):  
Alexander Sharenko ◽  
Martijn Kuik ◽  
Michael F. Toney ◽  
Thuc-Quyen Nguyen
Keyword(s):  
Solar Cells ◽  
Phase Separation ◽  
Small Molecule ◽  
Organic Solar Cells ◽  
Bulk Heterojunction ◽  
Solution Processed

scholarly journals D-A-D structured organic molecules with diketopyrrolopyrrole acceptor unit for solution-processed organic solar cells

2014 ◽  
Vol 372 (2013) ◽  
pp. 20130009 ◽  
Author(s):  
Jing Zhang ◽  
Chang He ◽  
Zhi-Guo Zhang ◽  
Dan Deng ◽  
Maojie Zhang ◽  
...  
Keyword(s):  
Solar Cells ◽  
Organic Solar Cells ◽  
Organic Molecules ◽  
Bulk Heterojunction ◽  
Energy Levels ◽  
Orbital Energy ◽  
Broad Absorption ◽  
Photovoltaic Properties ◽  
Solution Processed ◽  
Highest Occupied Molecular Orbital

Four solution-processable D-A-D structured organic molecules with diketopyrrolopyrrole (DPP) as acceptor unit and triphenylamine (TPA) or (4-hexyl)thieno [3,2-b]thiophene (HTT) as donor unit, DPP8-TPA, DPP8-TPA-OR, DPP6-HTT and DPP8-HTT, were designed and synthesized for the application as donor materials in solution-processed organic solar cells (OSCs). The molecules show broad absorption and relatively lower highest occupied molecular orbital energy levels. Photovoltaic properties of the molecules were investigated by fabricating the bulk-heterojunction OSCs with the molecules as donor and PC 71 BM as acceptor. Power conversion efficiency of the OSC based on DPP8-HTT reached 1.5% under the illumination of AM1.5, 100 mW cm −2 .

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