Regulating Bulk‐Heterojunction Molecular Orientations through Surface Free Energy Control of Hole‐Transporting Layers for High‐Performance Organic Solar Cells

2019 ◽  
Vol 31 (17) ◽  
pp. 1806921 ◽  
Author(s):  
Jianqiu Wang ◽  
Zhong Zheng ◽  
Dongyang Zhang ◽  
Jianqi Zhang ◽  
Jiyu Zhou ◽  
...  
Keyword(s):  
Free Energy ◽  
Solar Cells ◽  
Surface Free Energy ◽  
Organic Solar Cells ◽  
High Performance ◽  
Bulk Heterojunction ◽  
Energy Control ◽  
Hole Transporting

A General Approach of Adjusting the Surface‐Free Energy of the Interfacial Layer for High‐Performance Organic Solar Cells

2020 ◽  
Vol 4 (7) ◽  
pp. 2000054
Author(s):  
Njud S. Alharbi ◽  
Chenyun Wang ◽  
Fawaz E. Alsaadi ◽  
Samar O. Rabah ◽  
Zhan'ao Tan
Keyword(s):  
Free Energy ◽  
Solar Cells ◽  
Surface Free Energy ◽  
Organic Solar Cells ◽  
Interfacial Layer ◽  
High Performance

Chemically driven supramolecular self-assembly of porphyrin donors for high-performance organic solar cells

2018 ◽  
Vol 6 (30) ◽  
pp. 14675-14680 ◽  
Author(s):  
Xuan Zhou ◽  
Wei Tang ◽  
Pengqing Bi ◽  
Lei Yan ◽  
Xingzhu Wang ◽  
...  
Keyword(s):  
Solar Cells ◽  
Organic Solar Cells ◽  
Self Assembly ◽  
High Performance ◽  
Bulk Heterojunction ◽  
J Aggregates

Supramolecular self-assembly of a porphyrin donor with J-aggregates affords higher performance with a PC71BM acceptor in bulk heterojunction organic solar cells.

scholarly journals High-Permittivity Conjugated Polyelectrolyte Interlayers for High-Performance Bulk Heterojunction Organic Solar Cells

2016 ◽  
Vol 8 (10) ◽  
pp. 6309-6314 ◽  
Author(s):  
Jurgen Kesters ◽  
Sanne Govaerts ◽  
Geert Pirotte ◽  
Jeroen Drijkoningen ◽  
Michèle Chevrier ◽  
...  
Keyword(s):  
Solar Cells ◽  
Organic Solar Cells ◽  
High Performance ◽  
Bulk Heterojunction ◽  
High Permittivity ◽  
Conjugated Polyelectrolyte

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.

scholarly journals Solution-Processed PEDOT:PSS/MoS2 Nanocomposites as Efficient Hole-Transporting Layers for Organic Solar Cells

Nanomaterials ◽  
2019 ◽  
Vol 9 (9) ◽  
pp. 1328 ◽  
Author(s):  
Madeshwaran Sekkarapatti Ramasamy ◽  
Ka Yeon Ryu ◽  
Ju Won Lim ◽  
Asia Bibi ◽  
Hannah Kwon ◽  
...  
Keyword(s):  
Solar Cells ◽  
Organic Solar Cells ◽  
High Performance ◽  
Hybrid Film ◽  
Acid Methyl Ester ◽  
Cost Effective ◽  
Charge Transfer Resistance ◽  
Electrical Impedance Spectroscopy ◽  
Transfer Resistance ◽  
Hole Transporting

An efficient hole-transporting layer (HTL) based on functionalized two-dimensional (2D) MoS2-poly(3,4-ethylenedioxythiophene):poly(styrenesulfonate) (PEDOT:PSS) composites has been developed for use in organic solar cells (OSCs). Few-layer, oleylamine-functionalized MoS2 (FMoS2) nanosheets were prepared via a simple and cost-effective solution-phase exfoliation method; then, they were blended into PEDOT:PSS, a conducting conjugated polymer, and the resulting hybrid film (PEDOT:PSS/FMoS2) was tested as an HTL for poly(3-hexylthiophene):[6,6]-phenyl-C61-butyric acid methyl ester (P3HT:PCBM) OSCs. The devices using this hybrid film HTL showed power conversion efficiencies up to 3.74%, which is 15.08% higher than that of the reference ones having PEDOT:PSS as HTL. Atomic force microscopy and contact angle measurements confirmed the compatibility of the PEDOT:PSS/FMoS2 surface for active layer deposition on it. The electrical impedance spectroscopy analysis revealed that their use minimized the charge-transfer resistance of the OSCs, consequently improving their performance compared with the reference cells. Thus, the proposed fabrication of such HTLs incorporating 2D nanomaterials could be further expanded as a universal protocol for various high-performance optoelectronic devices.

scholarly journals Understanding the High Performance of over 15% Efficiency in Single‐Junction Bulk Heterojunction Organic Solar Cells

2019 ◽  
Vol 31 (48) ◽  
pp. 1903868 ◽  
Author(s):  
Akchheta Karki ◽  
Joachim Vollbrecht ◽  
Alana L. Dixon ◽  
Nora Schopp ◽  
Max Schrock ◽  
...  
Keyword(s):  
Solar Cells ◽  
Organic Solar Cells ◽  
High Performance ◽  
Bulk Heterojunction ◽  
Single Junction
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