scholarly journals Near infrared electron acceptors with a photoresponse beyond 1000 nm for highly efficient organic solar cells

2020 ◽  
Vol 8 (35) ◽  
pp. 18154-18161
Author(s):  
Chengliang He ◽  
Yaokai Li ◽  
Yanfeng Liu ◽  
Yuhao Li ◽  
Guanqing Zhou ◽  
...  
Keyword(s):  
Solar Cells ◽  
Organic Solar Cells ◽  
Molecular Orientation ◽  
Near Infrared ◽  
Electron Acceptors ◽  
Device Performance ◽  
Highly Efficient

Non-fullerene acceptors with photoresponse beyond 1000 nm were synthesized with different thiophene bridges, which influence molecular orientation and thus device performance.

Solution-processable silicon naphthalocyanine tetraimides as near infrared electron acceptors in organic solar cells

2022 ◽  
Vol 197 ◽  
pp. 109846
Author(s):  
Chunsheng Cai ◽  
Lei Wang ◽  
Ming Hu ◽  
Li Li ◽  
Jubiao Fu ◽  
...  
Keyword(s):  
Solar Cells ◽  
Organic Solar Cells ◽  
Near Infrared ◽  
Electron Acceptors ◽  
Solution Processable

Designing of near-infrared sensitive asymmetric small molecular donors for high-efficiency organic solar cells

2020 ◽  
Vol 19 (08) ◽  
pp. 2050034 ◽  
Author(s):  
Muhammad Yasir Mehboob ◽  
Muhammad Usman Khan ◽  
Riaz Hussain ◽  
Rafia Fatima ◽  
Zobia Irshad ◽  
...  
Keyword(s):  
Solar Cells ◽  
Dipole Moment ◽  
Organic Solar Cells ◽  
Near Infrared ◽  
High Efficiency ◽  
Energy Gap ◽  
Transition Density ◽  
Open Circuit ◽  
Excitation Energies ◽  
Highly Efficient

Herein, we have designed four small molecular donors (SMDs) with Donor–Acceptor–Acceptor (D–Á–A) backbone having different acceptor units for highly efficient organic solar cells (OSCs). The specific molecular modeling has been made by replacing the additional acceptor unit (A) of recently synthesized TPA-DAA-MDN molecule (R) by employing different highly efficient acceptor units in order to improve the photovoltaic performances of the molecules. A theoretical approach (DFT and TD-DFT) has been applied to investigate the photophysical, opto-electronic and photovoltaic parameters of the designed molecules (DAA1–DAA4) and compared with the reference molecule (R). The red-shifting absorption of SMDs is the most important factor for highly efficient OSCs. Our all formulated molecules showed a red shifted absorption spectrum and also exhibit near IR sensitivity. Acceptor unit modification of R molecule causes reduction in HOMO-LUMO energy gap; therefore, all designed molecules offer better opto-electronic properties as compared to R molecule. A variety of certain critical factors essential for efficient SMDs like frontier molecular orbitals (FMOs), absorption maxima, dipole moment, exciton binding energy along with transition density matrix, excitation energy, open circuit voltages and charge mobilities of (DAA1–DAA4) and R have also been investigated. Generally, low values of reorganizational energy (hole and electron) offer high charge mobility and our all designed molecules are enriched in this aspect. High open circuit voltage values, low excitation energies, large dipole moment values indicate that our designed SMDs are suitable candidates for high-efficiency OSCs. Furthermore, conceptualized molecules are superior and thus are suggested to experimentalist for out-looking future progresses of highly efficient OSCs devices.

Near-infrared electron acceptors with fused nonacyclic molecular backbones for nonfullerene organic solar cells

2020 ◽  
Vol 4 (6) ◽  
pp. 1729-1738 ◽  
Author(s):  
Jianquan Zhang ◽  
Yunke Li ◽  
Zhengxing Peng ◽  
Fujin Bai ◽  
Lik-Kuen Ma ◽  
...  
Keyword(s):  
Solar Cells ◽  
Organic Solar Cells ◽  
Near Infrared ◽  
Electron Acceptors ◽  
Strong Electron ◽  
Molecular Backbone

Two strong electron-donating moieties were fused into the molecular backbone of small molecular acceptors showing dramatically extended absorption beyond 900 nm.

Tuning the dipole moments of nonfullerene acceptors with an asymmetric terminal strategy for highly efficient organic solar cells

2019 ◽  
Vol 7 (15) ◽  
pp. 8889-8896 ◽  
Author(s):  
Miao Li ◽  
Yuanyuan Zhou ◽  
Jianqi Zhang ◽  
Jinsheng Song ◽  
Zhishan Bo
Keyword(s):  
Solar Cells ◽  
Thick Film ◽  
Organic Solar Cells ◽  
Dipole Moments ◽  
Electron Acceptors ◽  
Photovoltaic Devices ◽  
Highly Efficient ◽  
Fused Ring

Fused-ring electron acceptors with asymmetric terminals for highly efficient thick-film photovoltaic devices.

Near-Infrared Electron Acceptors with Unfused Architecture for Efficient Organic Solar Cells

2020 ◽  
Vol 12 (14) ◽  
pp. 16700-16706 ◽  
Author(s):  
Chengliang He ◽  
Yaokai Li ◽  
Shuixing Li ◽  
Zhi-Peng Yu ◽  
Yuhao Li ◽  
...  
Keyword(s):  
Solar Cells ◽  
Organic Solar Cells ◽  
Near Infrared ◽  
Electron Acceptors

Highly efficient ITO-free organic solar cells with a column-patterned microcavity

2021 ◽  
Author(s):  
Jiang Huang ◽  
Dan Zhao ◽  
Zifan Dou ◽  
Qingshan Fan ◽  
Na Li ◽  
...  
Keyword(s):  
Solar Cells ◽  
Tin Oxide ◽  
Organic Solar Cells ◽  
Indium Tin Oxide ◽  
Near Infrared ◽  
Infrared Range ◽  
Highly Efficient ◽  
Near Infrared Range

Highly efficient organic solar cells (OSCs) are demonstrated with the new design of column-patterned microcavity, which allows enhancing the external quantum efficiencies of both visible and near-infrared range of indium tin oxide free OSCs.

scholarly journals Near‐Infrared Electron Acceptors with Fluorinated Regioisomeric Backbone for Highly Efficient Polymer Solar Cells

2018 ◽  
Vol 30 (52) ◽  
pp. 1803769 ◽  
Author(s):  
Fang‐Xiao Chen ◽  
Jing‐Qi Xu ◽  
Zhi‐Xi Liu ◽  
Ming Chen ◽  
Ruoxi Xia ◽  
...  
Keyword(s):  
Solar Cells ◽  
Near Infrared ◽  
Polymer Solar Cells ◽  
Electron Acceptors ◽  
Highly Efficient

Near-infrared electron acceptors based on terrylene diimides for organic solar cells

2018 ◽  
Vol 6 (39) ◽  
pp. 18808-18812 ◽  
Author(s):  
Ningning Liang ◽  
Kai Sun ◽  
Jiajing Feng ◽  
Yu Chen ◽  
Dong Meng ◽  
...  
Keyword(s):  
Solar Cells ◽  
Charge Transport ◽  
Absorption Spectra ◽  
Organic Solar Cells ◽  
Near Infrared ◽  
Photovoltaic Performance ◽  
Electron Acceptors ◽  
Electron Donating Groups

The introduction of electron-donating groups into TDI broadens the absorption spectra and enhances the charge transport and photovoltaic performance.

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