scholarly journals Study of the mechanism and rate of exciton dissociation at the donor-acceptor interface in bulk-heterojunction organic solar cells

2013 ◽  
Vol 114 (7) ◽  
pp. 073510 ◽  
Author(s):  
Monishka Rita Narayan ◽  
Jai Singh
Keyword(s):  
Solar Cells ◽  
Organic Solar Cells ◽  
Bulk Heterojunction ◽  
Exciton Dissociation ◽  
Donor Acceptor

scholarly journals Fullerene derivative induced morphology of bulk heterojunction blends: PIPCP:PC61BM

RSC Advances ◽  
2019 ◽  
Vol 9 (8) ◽  
pp. 4106-4112 ◽  
Author(s):  
Tzu-Yen Huang ◽  
Hongping Yan ◽  
Maged Abdelsamie ◽  
Victoria Savikhin ◽  
Sebastian A. Schneider ◽  
...  
Keyword(s):  
Solar Cells ◽  
Organic Solar Cells ◽  
Bulk Heterojunction ◽  
Degree Of Crystallinity ◽  
Fullerene Derivative ◽  
Bulk Heterojunctions ◽  
Donor Acceptor ◽  
Acceptor Phase

The performance of organic solar cells depends on the morphology in bulk heterojunctions, including the polymer degree of crystallinity and the amount of each phase: aggregated donor, aggregated acceptor and molecularly mixed donor : acceptor phase.

Star-shaped benzotriindole-based donor-acceptor molecules: Synthesis, properties and application in bulk heterojunction and single-material organic solar cells

2020 ◽  
Vol 181 ◽  
pp. 108523 ◽  
Author(s):  
Dmitry O. Balakirev ◽  
Yuriy N. Luponosov ◽  
Artur L. Mannanov ◽  
Petr S. Savchenko ◽  
Yury Minenkov ◽  
...  
Keyword(s):  
Solar Cells ◽  
Organic Solar Cells ◽  
Bulk Heterojunction ◽  
Synthesis Properties ◽  
Donor Acceptor ◽  
Single Material ◽  
Acceptor Molecules

scholarly journals All-small-molecule organic solar cells with over 14% efficiency by optimizing hierarchical morphologies

2019 ◽  
Vol 10 (1) ◽  
Author(s):  
Ruimin Zhou ◽  
Zhaoyan Jiang ◽  
Chen Yang ◽  
Jianwei Yu ◽  
Jirui Feng ◽  
...  
Keyword(s):  
Solar Cells ◽  
Small Molecule ◽  
Organic Solar Cells ◽  
High Performance ◽  
High Efficiency ◽  
Bulk Heterojunction ◽  
Photovoltaic Performance ◽  
Photovoltaic System ◽  
Active Layers ◽  
Donor Acceptor

AbstractThe high efficiency all-small-molecule organic solar cells (OSCs) normally require optimized morphology in their bulk heterojunction active layers. Herein, a small-molecule donor is designed and synthesized, and single-crystal structural analyses reveal its explicit molecular planarity and compact intermolecular packing. A promising narrow bandgap small-molecule with absorption edge of more than 930 nm along with our home-designed small molecule is selected as electron acceptors. To the best of our knowledge, the binary all-small-molecule OSCs achieve the highest efficiency of 14.34% by optimizing their hierarchical morphologies, in which the donor or acceptor rich domains with size up to ca. 70 nm, and the donor crystals of tens of nanometers, together with the donor-acceptor blending, are proved coexisting in the hierarchical large domain. All-small-molecule photovoltaic system shows its promising for high performance OSCs, and our study is likely to lead to insights in relations between bulk heterojunction structure and photovoltaic performance.

Substituent effects in magnesium tetraethynylporphyrin with two diketopyrrolopyrrole units for bulk heterojunction organic solar cells

2017 ◽  
Vol 5 (44) ◽  
pp. 23067-23077 ◽  
Author(s):  
Keisuke Ogumi ◽  
Takafumi Nakagawa ◽  
Hiroshi Okada ◽  
Ryohei Sakai ◽  
Huan Wang ◽  
...  
Keyword(s):  
Solar Cells ◽  
Power Conversion Efficiency ◽  
Conversion Efficiency ◽  
Organic Solar Cells ◽  
Open Circuit Voltage ◽  
Bulk Heterojunction ◽  
Power Conversion ◽  
Substituent Effects ◽  
Open Circuit ◽  
Donor Acceptor

Acceptor–donor–acceptor conjugated magnesium porphyrins showed a power conversion efficiency of 5.73%, high open-circuit voltage of 0.79 V, or an extended incident photon-to-current conversion efficiency spectrum to 1100 nm, depending on the substituents.

scholarly journals Pyrrolo[3,2-b]pyrrole-1,4-dione (IsoDPP) End Capped with Napthalimide or Phthalimide: Novel Small Molecular Acceptors for Organic Solar Cells

Molecules ◽  
2020 ◽  
Vol 25 (20) ◽  
pp. 4700
Author(s):  
Thu Trang Do ◽  
Meera Stephen ◽  
Khai Leok Chan ◽  
Sergei Manzhos ◽  
Paul L. Burn ◽  
...  
Keyword(s):  
Solar Cells ◽  
Organic Solar Cells ◽  
Bulk Heterojunction ◽  
High Thermal Stability ◽  
Electron Affinities ◽  
New Materials ◽  
Good Solubility ◽  
Wide Range ◽  
Donor Acceptor ◽  
End Capping

We introduce two novel solution-processable electron acceptors based on an isomeric core of the much explored diketopyrrolopyrrole (DPP) moiety, namely pyrrolo[3,2-b]pyrrole-1,4-dione (IsoDPP). The newly designed and synthesized compounds, 6,6′-[(1,4-bis{4-decylphenyl}-2,5-dioxo-1,2,4,5-tetrahydropyrrolo[3,2-b]pyrrole-3,6-diyl)bis(thiophene-5,2-diyl)]bis[2-(2-butyloctyl)-1H-benzo[de]isoquinoline-1,3(2H)-dione] (NAI-IsoDPP-NAI) and 5,5′-[(1,4-bis{4-decylphenyl}-2,5-dioxo-1,2,4,5-tetrahydropyrrolo[3,2-b]pyrrole-3,6-diyl)bis(thiophene-5,2-diyl)]bis[2-(2-butyloctyl)isoindoline-1,3-dione] (PI-IsoDPP-PI) have been synthesized via Suzuki couplings using IsoDPP as a central building block and napthalimide or phthalimide as end-capping groups. The materials both exhibit good solubility in a wide range of organic solvents including chloroform (CF), dichloromethane (DCM), and tetrahydrofuran (THF), and have a high thermal stability. The new materials absorb in the wavelength range of 300–600 nm and both compounds have similar electron affinities, with the electron affinities that are compatible with their use as acceptors in donor-acceptor bulk heterojunction (BHJ) organic solar cells. BHJ devices comprising the NAI-IsoDPP-NAI acceptor with poly(3-n-hexylthiophene) (P3HT) as the donor were found to have a better performance than the PI-IsoDPP-PI containing cells, with the best device having a VOC of 0.92 V, a JSC of 1.7 mAcm−2, a FF of 63%, and a PCE of 0.97%.

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