Optimization of thickness and morphology of active layer for high performance of bulk-heterojunction organic solar cells

2010 ◽  
Vol 94 (6) ◽  
pp. 1118-1124 ◽  
Author(s):  
Young Min Nam ◽  
June Huh ◽  
Won Ho Jo
Keyword(s):  
Solar Cells ◽  
Active Layer ◽  
Organic Solar Cells ◽  
High Performance ◽  
Bulk Heterojunction

scholarly journals Pseudo-bilayer architecture enables high-performance organic solar cells with enhanced exciton diffusion length

2021 ◽  
Vol 12 (1) ◽  
Author(s):  
Kui Jiang ◽  
Jie Zhang ◽  
Zhengxing Peng ◽  
Francis Lin ◽  
Shengfan Wu ◽  
...  
Keyword(s):  
Solar Cells ◽  
Active Layer ◽  
Organic Solar Cells ◽  
High Performance ◽  
Diffusion Length ◽  
Bulk Heterojunction ◽  
Short Circuit ◽  
Full Potential ◽  
Exciton Diffusion ◽  
Exciton Diffusion Length

AbstractSolution-processed organic solar cells (OSCs) are a promising candidate for next-generation photovoltaic technologies. However, the short exciton diffusion length of the bulk heterojunction active layer in OSCs strongly hampers the full potential to be realized in these bulk heterojunction OSCs. Herein, we report high-performance OSCs with a pseudo-bilayer architecture, which possesses longer exciton diffusion length benefited from higher film crystallinity. This feature ensures the synergistic advantages of efficient exciton dissociation and charge transport in OSCs with pseudo-bilayer architecture, enabling a higher power conversion efficiency (17.42%) to be achieved compared to those with bulk heterojunction architecture (16.44%) due to higher short-circuit current density and fill factor. A certified efficiency of 16.31% is also achieved for the ternary OSC with a pseudo-bilayer active layer. Our results demonstrate the excellent potential for pseudo-bilayer architecture to be used for future OSC applications.

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

A tetrachlorinated molecular non-fullerene acceptor for high performance near-IR absorbing organic solar cells

2018 ◽  
Vol 6 (34) ◽  
pp. 9060-9064 ◽  
Author(s):  
Audrey Laventure ◽  
Gregory C. Welch
Keyword(s):  
Solar Cells ◽  
Active Layer ◽  
Organic Solar Cells ◽  
High Performance ◽  
Low Energy ◽  
Energy Photon ◽  
Chlorine Atoms ◽  
Near Ir

Installation of chlorine atoms into the ITIC non-fullerene acceptor enables low energy photon harvesting generating high photocurrent in OSCs when paired with PBDB-T. The active layer morphology is greatly influenced by solvent additives.

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.

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