Journal ArticleDOI
Development of small-molecule materials for high-performance organic solar cells
Haijun Fan,Xiaozhang Zhu +1 more
TLDR
In this paper, a mini review of small molecules with impressive photovoltaic performance especially reported in the last two years was highlighted, and the relationship between molecular structure and device performance was analyzed, which drew some rules for rational molecular design.Abstract:
With the rapid development in recent years, small-molecule organic solar cell is challenging the dominance of its counterpart, polymer solar cell. The top power conversion efficiencies of both single and tandem solar cells based on small molecules have surpassed 9%. In this mini review, achievements of small molecules with impressive photovoltaic performance especially reported in the last two years were highlighted. The relationship between molecular structure and device performance was analyzed, which draws some rules for rational molecular design. Five series of p- and n-type small molecules were selected based on the consideration of their competitiveness of power conversion efficiencies.read more
Citations
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Journal ArticleDOI
Organic Optoelectronic Materials: Mechanisms and Applications
TL;DR: The article reviews the current understanding of the physical mechanisms that determine the (opto)electronic properties of high-performance organic materials and highlights the capabilities of various experimental techniques for characterization, summarizes top-of-the-line device performance, and outlines recent trends in the further development of the field.
Journal ArticleDOI
Molecular Design of Benzodithiophene-Based Organic Photovoltaic Materials.
TL;DR: This review offered an overview of the organic photovoltaic materials based on BDT from the aspects of backbones, functional groups, alkyl chains, and device performance, trying to provide a guideline about the structure-performance relationship.
Journal ArticleDOI
Perylenediimides as non-fullerene acceptors in bulk-heterojunction solar cells (BHJSCs)
TL;DR: In this paper, the authors highlight the recent progress in highly efficient perylenediimide dyes characterized by a reduction of the cofacial stacking without an adverse impact in their charge-transport properties, which has led to PCEs higher than 8.4%.
Journal ArticleDOI
Fluorination vs. chlorination: a case study on high performance organic photovoltaic materials
Yun Zhang,Huifeng Yao,Shaoqing Zhang,Shaoqing Zhang,Yunpeng Qin,Yunpeng Qin,Jianqi Zhang,Liyan Yang,Wanning Li,Zhixiang Wei,Feng Gao,Jianhui Hou +11 more
TL;DR: In this paper, the impact of chlorination and fluorination on the properties of organic solar cells (OSCs) was studied and it was shown that chlorination is more effective than fluorination in downshifting the molecular energy levels and broadening the absorption spectra.
Journal ArticleDOI
On the theoretical prediction of fluorescence rates from first principles using the path integral approach.
TL;DR: It is shown that the rates and spectra computed in this work are well within the acceptable range of errors and can be used in future predictions, particularly for screening purposes, with the only limitation on size being that of the electronic structure calculation itself.
References
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Journal ArticleDOI
Polymer–Fullerene Composite Solar Cells
TL;DR: Polymer-based organic photovoltaic systems hold the promise for a cost-effective, lightweight solar energy conversion platform, which could benefit from simple solution processing of the active layer.
Journal ArticleDOI
Polymer‐Fullerene Bulk‐Heterojunction Solar Cells
Christoph J. Brabec,Srinivas (Jimmy) Gowrisanker,Jonathan Halls,Darin W. Laird,Shijun Jia,Shawn P. Williams +5 more
TL;DR: An outlook is presented on what will be required to drive this young photovoltaic technology towards the next major milestone, a 10% power conversion efficiency, considered by many to represent the efficiency at which OPV can be adopted in wide-spread applications.
Journal ArticleDOI
An electron acceptor challenging fullerenes for efficient polymer solar cells.
TL;DR: A novel non-fullerene electron acceptor (ITIC) that overcomes some of the shortcomings of fullerene acceptors, for example, weak absorption in the visible spectral region and limited energy-level variability, is designed and synthesized.
Journal ArticleDOI
Aggregation and morphology control enables multiple cases of high-efficiency polymer solar cells.
Yuhang Liu,Jingbo Zhao,Zhengke Li,Cheng Mu,Wei Ma,Huawei Hu,Kui Jiang,Haoran Lin,Harald Ade,He Yan +9 more
TL;DR: The uncovered aggregation and design rules yield three high-efficiency (>10%) donor polymers and will allow further synthetic advances and matching of both the polymer and fullerene materials, potentially leading to significantly improved performance and increased design flexibility.
Journal ArticleDOI
Small molecule organic semiconductors on the move: promises for future solar energy technology.
Amaresh Mishra,Peter Bäuerle +1 more
TL;DR: On the eve of commercialization of organic solar cells, this review provides an overview over efficiencies attained with small molecules/oligomers in OSCs and reflects materials and device concepts developed over the last decade.