Subtle Molecular Tailoring Induces Significant Morphology Optimization Enabling over 16% Efficiency Organic Solar Cells with Efficient Charge Generation

2019 ◽  
Vol 32 (4) ◽  
pp. 1906324 ◽  
Author(s):  
Zichun Zhou ◽  
Wenrui Liu ◽  
Guanqing Zhou ◽  
Ming Zhang ◽  
Deping Qian ◽  
...  
Keyword(s):  
Solar Cells ◽  
Organic Solar Cells ◽  
Charge Generation ◽  
Efficient Charge ◽  
Molecular Tailoring

Rational compatibility in ternary matrix enables all-small-molecule organic solar cells with over 16% efficiency

2021 ◽  
Author(s):  
Mengyun Jiang ◽  
Hairui Bai ◽  
Hongfu Zhi ◽  
Lu Yan ◽  
Han Young Woo ◽  
...  
Keyword(s):  
Solar Cells ◽  
Phase Separation ◽  
Small Molecule ◽  
Organic Solar Cells ◽  
Charge Generation ◽  
Molecular Arrangement ◽  
Efficient Charge

How to manipulate the phase separation and molecular arrangement to meet the need of efficient charge generation and extraction remains as the long-standing challenge in all-small-molecule organic solar cells (ASM-OSCs)....

Conditions for efficient charge generation preceded by energy transfer process in non-fullerene organic solar cells

2021 ◽  
Author(s):  
L. Benatto ◽  
C. A. M. Moraes ◽  
G. Candiotto ◽  
K. R. A. Sousa ◽  
J. P. A. Souza ◽  
...  
Keyword(s):  
Energy Transfer ◽  
Solar Cells ◽  
Binding Energy ◽  
Transfer Process ◽  
Organic Solar Cells ◽  
Driving Force ◽  
Energy Transfer Process ◽  
Simple Relationship ◽  
Charge Generation ◽  
Efficient Charge

Our results provide a simple relationship involving the driving force and binding energy of CT state to maximize charge generation in non-fullerene organic solar cells.

Indole-based A–DA′D–A type acceptor-based organic solar cells achieve efficiency over 15 % with low energy loss

2020 ◽  
Vol 4 (12) ◽  
pp. 6203-6211
Author(s):  
Yu Chen ◽  
Rui Cao ◽  
Hui Liu ◽  
M. L. Keshtov ◽  
Emmanuel N. Koukaras ◽  
...  
Keyword(s):  
Solar Cells ◽  
Energy Loss ◽  
Small Molecule ◽  
Organic Solar Cells ◽  
High Performance ◽  
Power Conversion ◽  
Low Energy ◽  
Charge Generation ◽  
Small Energy ◽  
Efficient Charge

In order to increase the power conversion efficiency (PCE) of organic solar cells, developing high-performance non-fullerene small molecule acceptors is important for efficient charge generation and small energy loss.

High‐Efficient Charge Generation in Single‐Donor‐Component‐Based p‐i‐n Structure Organic Solar Cells

Solar RRL ◽  
2020 ◽  
Vol 4 (4) ◽  
pp. 1900580 ◽  
Author(s):  
Yajie Zhang ◽  
Dan Deng ◽  
Qiong Wu ◽  
Yang Mi ◽  
Chen Yang ◽  
...  
Keyword(s):  
Solar Cells ◽  
Organic Solar Cells ◽  
Charge Generation ◽  
Single Donor ◽  
High Efficient ◽  
Efficient Charge

Synergistic Effect Incorporating Intra- and Inter-Molecular Charge Transfer in Nonfullerene Acceptor Molecules for High-Efficient Organic Solar Cells

2021 ◽  
Author(s):  
Yiwen Ji ◽  
Lingxia Xu ◽  
Hang Yin ◽  
Bin Cui ◽  
Longlong Zhang ◽  
...  
Keyword(s):  
Solar Cells ◽  
Charge Transfer ◽  
Organic Solar Cells ◽  
Specific Mechanism ◽  
Charge Generation ◽  
High Efficient ◽  
Molecular Charge ◽  
Efficient Charge ◽  
Donor Acceptor ◽  
Nonfullerene Acceptor

Organic solar cells (OSCs) based on nonfullerene acceptors (NFAs) have achieved rapid developments benefiting from the near-zero donor/acceptor (D/A) energy offset. However, a specific mechanism underlying the high-efficient charge generation...

The Role of Balanced Dual Charge Generation Pathways in Ternary Organic Solar Cells

2021 ◽  
Author(s):  
Zewen Chen ◽  
Hongzhu Chen ◽  
Chuang Feng ◽  
xiaojing wang ◽  
Zhicai He ◽  
...  
Keyword(s):  
Solar Cells ◽  
Power Conversion Efficiency ◽  
Conversion Efficiency ◽  
High Power ◽  
Organic Solar Cells ◽  
Power Conversion ◽  
High Power Conversion Efficiency ◽  
Charge Generation ◽  
Efficient Charge

Efficient charge generation and transfer is crucial for Organic Solar Cells (OSCs) to achieve high power conversion efficiency (PCE). The ternary strategy is commonly used to expand the absorption range...

scholarly journals Orientation dependent molecular electrostatics drives efficient charge generation in homojunction organic solar cells

2020 ◽  
Vol 11 (1) ◽  
Author(s):  
Yifan Dong ◽  
Vasileios C. Nikolis ◽  
Felix Talnack ◽  
Yi-Chun Chin ◽  
Johannes Benduhn ◽  
...  
Keyword(s):  
Solar Cells ◽  
Organic Solar Cells ◽  
Structural Control ◽  
Organic Solar Cell ◽  
Open Circuit ◽  
Charge Generation ◽  
Promising Alternative ◽  
Efficient Charge ◽  
Modelling Studies ◽  
Crystalline Domains

Abstract Organic solar cells usually utilise a heterojunction between electron-donating (D) and electron-accepting (A) materials to split excitons into charges. However, the use of D-A blends intrinsically limits the photovoltage and introduces morphological instability. Here, we demonstrate that polycrystalline films of chemically identical molecules offer a promising alternative and show that photoexcitation of α-sexithiophene (α-6T) films results in efficient charge generation. This leads to α-6T based homojunction organic solar cells with an external quantum efficiency reaching up to 44% and an open-circuit voltage of 1.61 V. Morphological, photoemission, and modelling studies show that boundaries between α-6T crystalline domains with different orientations generate an electrostatic landscape with an interfacial energy offset of 0.4 eV, which promotes the formation of hybridised exciton/charge-transfer states at the interface, dissociating efficiently into free charges. Our findings open new avenues for organic solar cell design where material energetics are tuned through molecular electrostatic engineering and mesoscale structural control.

Efficient charge generation at low energy losses in organic solar cells: a key issues review

2020 ◽  
Vol 83 (8) ◽  
pp. 082601 ◽  
Author(s):  
Ye Xu ◽  
Huifeng Yao ◽  
Lijiao Ma ◽  
Jingwen Wang ◽  
Jianhui Hou
Keyword(s):  
Solar Cells ◽  
Organic Solar Cells ◽  
Low Energy ◽  
Energy Losses ◽  
Charge Generation ◽  
Efficient Charge ◽  
Key Issues

Additive-induced Miscibility Regulation and Hierarchical Morphology Enables 17.5% Binary Organic Solar Cells

2021 ◽  
Author(s):  
Jie Lv ◽  
Hua Tang ◽  
Jiaming Huang ◽  
Cenqi Yan ◽  
Kuan Liu ◽  
...  
Keyword(s):  
Solar Cells ◽  
Solar Cell ◽  
Organic Solar Cells ◽  
Organic Solar Cell ◽  
Power Conversion ◽  
Charge Trapping ◽  
Free Charge ◽  
Charge Generation ◽  
Low Charge ◽  
Hierarchical Morphology

Due to the barrierless free charge generation, low charge trapping, and high charge mobilities, the PM6:Y6 organic solar cell (OSC) achieves excellent power conversion efficiency (PCE) of 15.7%. However, the...

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