Mechanism study on organic ternary photovoltaics with 18.3% certified efficiency: from molecule to device

Author(s):  
Yaokai Li ◽  
Yuan Guo ◽  
Zeng Chen ◽  
Lingling Zhan ◽  
Lijian Zuo ◽  
...  

Multi-component organic photovoltaics (OPVs), e.g., ternary blends, are effective for high performance, while the fundamental understanding from the molecular to device level is less-known. To address this issue, we here...

2021 ◽  
Author(s):  
Lin Lin ◽  
Zeping Huang ◽  
Yuanqi Luo ◽  
Tingen Peng ◽  
Baitian He ◽  
...  

The synthesis and application as a cathode interlayer in organic photovoltaics of a fluorene derivative with pyridyl functional chains are presented.


ChemSusChem ◽  
2021 ◽  
Author(s):  
Yingping Zou ◽  
Xiang Xu ◽  
Xiaoyan Luo ◽  
Qingya Wei ◽  
Jun Yuan ◽  
...  

2013 ◽  
Vol 15 (48) ◽  
pp. 20966 ◽  
Author(s):  
Kyle A. Luck ◽  
Tejas A. Shastry ◽  
Stephen Loser ◽  
Gabriel Ogien ◽  
Tobin J. Marks ◽  
...  

2021 ◽  
Author(s):  
Grisell Díaz Leines ◽  
Angelos Michaelides ◽  
Jutta Rogal

Gaining fundamental understanding of crystal nucleation processes in metal alloys is crucial for the development and design of high-performance materials with targeted properties. Yet, crystallizationis a complex non-equilibrium process and,...


2016 ◽  
Vol 4 (13) ◽  
pp. 4882-4892 ◽  
Author(s):  
Wei Tang ◽  
Xiaohe Song ◽  
Yonghua Du ◽  
Chengxin Peng ◽  
Ming Lin ◽  
...  

Both fundamental understanding and practical demonstrations suggest that aqueous ion-exchanged NaFePO4is a promising cathode for organic sodium ion battery.


ACS Nano ◽  
2021 ◽  
Author(s):  
Yepin Zhao ◽  
Pei Cheng ◽  
Hangbo Yang ◽  
Minhuan Wang ◽  
Dong Meng ◽  
...  

2020 ◽  
pp. 089270572090765
Author(s):  
Ayesha Kausar

This review presents state-of-the-art progress in the field of polystyrene (PS)/graphene nanocomposite. Graphene is a monoatomic thick nanoallotrope of carbon. It has attracted tremendous research consideration owing to chemical functionalization aptitude and remarkable physical properties. Graphene has been used as a potential nanofiller to dramatically improve the performance of polymeric nanocomposite. PS is an important synthetic aromatic thermoplastic polymer. Graphene has been used to enhance the mechanical strength, thermal stability, electrical conductivity, and thermal conductivity of PS/graphene nanocomposite. Dispersion routes and synthetic methods of graphene and PS/graphene nanocomposite have also been reviewed. PS/graphene nanocomposites have been explored for anticorrosion, electromagnetic interference shielding, batteries, electrocatalysis, and microextraction applications. In spite of interesting developments, a lot remains to be done with regard to fundamental understanding of structure–property relationship and designing materials to operate for advanced high performance applications. This review is also concluded listing current challenges associated with processing and future perspectives of nanocomposite.


2020 ◽  
Vol 117 (48) ◽  
pp. 30191-30200
Author(s):  
Cody L. Ritt ◽  
Jay R. Werber ◽  
Mengyi Wang ◽  
Zhongyue Yang ◽  
Yumeng Zhao ◽  
...  

Escalating global water scarcity necessitates high-performance desalination membranes, for which fundamental understanding of structure–property–performance relationships is required. In this study, we comprehensively assess the ionization behavior of nanoporous polyamide selective layers in state-of-the-art nanofiltration (NF) membranes. In these films, residual carboxylic acids and amines influence permeability and selectivity by imparting hydrophilicity and ionizable moieties that can exclude coions. We utilize layered interfacial polymerization to prepare physically and chemically similar selective layers of controlled thickness. We then demonstrate location-dependent ionization of carboxyl groups in NF polyamide films. Specifically, only surface carboxyl groups ionize under neutral pH, whereas interior carboxyl ionization requires pH >9. Conversely, amine ionization behaves invariably across the film. First-principles simulations reveal that the low permittivity of nanoconfined water drives the anomalous carboxyl ionization behavior. Furthermore, we report that interior carboxyl ionization could improve the water–salt permselectivity of NF membranes over fourfold, suggesting that interior charge density could be an important tool to enhance the selectivity of polyamide membranes. Our findings highlight the influence of nanoconfinement on membrane transport properties and provide enhanced fundamental understanding of ionization that could enable novel membrane design.


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