Quantifying Voc loss induced by alkyl pendants of acceptors in organic solar cells

2020 ◽  
Vol 8 (36) ◽  
pp. 12568-12577
Author(s):  
Xiaoyu Liu ◽  
Zhong Zheng ◽  
Ye Xu ◽  
Jianqiu Wang ◽  
Yafei Wang ◽  
...  
Keyword(s):  
Solar Cells ◽  
Organic Solar Cells ◽  
Optoelectronic Properties ◽  
Molecular Structures ◽  
Organic Photovoltaic ◽  
Bulk Heterojunctions ◽  
Properties Of Materials ◽  
Made In

In the organic photovoltaic community, extensive efforts have been made in proposing resolutions for depressing Voc loss related to the molecular structures and optoelectronic properties of materials in bulk heterojunctions.

scholarly journals Interface Tuning between Two Connecting Bulk Heterojunctions in Small Molecule Bilayer Ternary Solar Cells

Materials ◽  
2020 ◽  
Vol 13 (21) ◽  
pp. 4833
Author(s):  
Qi Jiang ◽  
Yingjie Xing
Keyword(s):  
Solar Cells ◽  
Organic Solar Cells ◽  
Interfacial Layer ◽  
Bulk Heterojunction ◽  
Photovoltaic Performance ◽  
Organic Photovoltaic ◽  
Metal Phthalocyanine ◽  
Bulk Heterojunctions ◽  
Organic Photovoltaic Device ◽  
Ternary Bulk Heterojunction

Bilayer ternary solar cells are a kind of novel organic photovoltaic device with a triple-component active layer but are different from the ternary bulk heterojunction (BHJ) blend. Two binary BHJs with a common acceptor (or donor) are deposited sequentially in this kind of device. Here, we study the fabrication and optimization of bilayer ternary solar cells using metal phthalocyanine donors and fullerene acceptor. The device power conversion efficiency (PCE) shows a significant dependence on the interface between the two binary BHJs. The interface formed by stacking two BHJs directly demonstrates severe restrictions on the device efficiency. We find that the photovoltaic performance of bilayer ternary cells can be improved by inserting a C60 molecular monolayer between the two binary BHJs. The effect of the C60 interfacial layer on charge transport is analyzed based on their transport characteristics under negative bias. A relationship between the C60 interfacial layer and recombination under illumination is discussed. This work reveals a particular influence due to the interface facing three materials in organic solar cells.

scholarly journals Organic Photovoltaic Behaviour with Centimeter-long Lateral Junctions

2021 ◽  
Author(s):  
Jaseela Palassery Ithikkal ◽  
Adrien Girault ◽  
Mitsuru Kikuchi ◽  
Yusuke Yabara ◽  
Seiichiro Izawa ◽  
...  
Keyword(s):  
Solar Cells ◽  
Organic Solar Cells ◽  
Organic Photovoltaic ◽  
Operation Mechanism ◽  
Photovoltaic Behavior

In the field of organic solar cells, lateral junction is a new concept. Moreover, the photovoltaic behavior is firstly observed for surprising long organic lateral junctions reaching 1.8 cm and the new operation mechanism dominated by trap-assisted recombination is proposed. <div><br></div>

scholarly journals Optoelectronic Properties of Alternating Copolymers Based on 3,4-Ethylenedioxythiophene and Various Dibromoarenes and Organic Solar Cells Prepared Thereof

2019 ◽  
Vol 76 (2) ◽  
pp. 179-183
Author(s):  
Kaoru UEGAKI ◽  
Kazuhiro NAKABAYASHI ◽  
Shin-ichi YAMAMOTO ◽  
Shotaro HAYASHI ◽  
Toshio KOIZUMI
Keyword(s):  
Solar Cells ◽  
Organic Solar Cells ◽  
Optoelectronic Properties ◽  
Alternating Copolymers

Improved mechanical adhesion and electronic stability of organic solar cells with thermal ageing: the role of diffusion at the hole extraction interface

2017 ◽  
Vol 5 (6) ◽  
pp. 2911-2919 ◽  
Author(s):  
W. Greenbank ◽  
N. Rolston ◽  
E. Destouesse ◽  
G. Wantz ◽  
L. Hirsch ◽  
...  
Keyword(s):  
Renewable Energy ◽  
Solar Cells ◽  
Organic Solar Cells ◽  
Thermal Ageing ◽  
Organic Photovoltaic ◽  
Mechanical Adhesion ◽  
Photovoltaic Solar Cells

Organic photovoltaic solar cells are a promising option for cheap, renewable energy, but must improve in their stability.

Copolymers based on trialkylsilylethynyl-phenyl substituted benzodithiophene building block for efficient organic solar cells

2021 ◽  
Author(s):  
Haifen Liu ◽  
Zixuan Zhu ◽  
Huafeng Li ◽  
Weili Fan ◽  
Kaihua Ning ◽  
...  
Keyword(s):  
Solar Cells ◽  
Organic Solar Cells ◽  
Building Block ◽  
Power Conversion ◽  
Molecular Structures ◽  
The Past ◽  
Conversion Efficiencies

Non-fullerene acceptors have received a great deal of attention over the past several years, and numerous modifications on the molecular structures significantly boosted the power conversion efficiencies (PCEs). To be...

Benzotriazacycle Cored Perylene Diimide Non-fullerene Acceptors for High-performance Organic Solar Cells

2021 ◽  
Vol 01 ◽  
Author(s):  
Min Deng ◽  
Zhenkai Ji ◽  
Xiaopeng Xu ◽  
Liyang Yu ◽  
Qiang Peng
Keyword(s):  
Solar Cells ◽  
Organic Solar Cells ◽  
High Performance ◽  
Energy Levels ◽  
Three Dimensional ◽  
Molecular Structures ◽  
Perylene Diimide ◽  
Photon Absorption ◽  
Optoelectronic Property ◽  
Design Synthesis

Background: Perylene diimide (PDI) is among the most investigated non-fullerene electron acceptor for organic solar cells (OSCs). Constructing PDI derivatives into three-dimensional propeller-like molecular structures is not only one of the viable routes to suppress the over aggregation tendency of the PDI chromophores, but also raises possibilities to tune and optimize the optoelectronic property of the molecules. Objective: In this work, we reported the design, synthesis, and characterization of three electron-accepting materials, namely BOZ-PDI, BTZ-PDI, and BIZ-PDI, each with three PDI arms linked to benzotrioxazole, benzotrithiazole, and benzotriimidazole based center cores, respectively. Method: The introduction of electron-withdrawing center cores with heteroatoms does not significantly complicate the synthesis of the acceptor molecules but drastically influences the energy levels of the propeller-like PDI derivatives. Result: The highest power conversion efficiency was obtained with benzoxazole-based BOZ-PDI reaching 7.70% for its higher photon absorption and charge transport ability. Conclusion: This work explores the utilization of electron-withdrawing cores with heteroatoms in the propeller-like PDI derivatives, which provides a handy tool to construct high-performance non-fullerene acceptor materials.

Tuning Optoelectronic Properties of Dithienopyrrole Donor Molecules for Organic Solar Cells

2019 ◽  
Vol 93 (11) ◽  
pp. 2233-2243
Author(s):  
Sobia Jabeen ◽  
Rasheed Ahmad Khera ◽  
Javed Iqbal ◽  
Muhammad Asgher Bajwa ◽  
Sana Matloob ◽  
...  
Keyword(s):  
Solar Cells ◽  
Organic Solar Cells ◽  
Optoelectronic Properties

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.

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