Polymer design for solar cell – Current trend and future scenario

Hemavathi, B.; Ahipa, T.N.; Pai, Ranjith Krishna

doi:10.1016/j.eurpolymj.2015.09.017

Cited by 25 publications

(20 citation statements)

References 155 publications

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“…However, a combination of pure thiophene and electron‐deficient moieties can be beneficial for improving the OPV performance. The incorporation of a strong electron‐withdrawing group to produce a D‐A‐type copolymer can usually increase the V oc . Wei et al developed a thieno[3,4‐c]pyrrole‐4,6‐dione (TPD)‐based polymer copolymer P33 via the Stille polymerization of the monomers, 3‐dibromo‐5‐ethylhexylthieno[3,4‐c]pyrrole‐4,6‐dione and 4,4′‐didocecyl‐5,5′‐bis(trimethylstannyl)‐2,2′‐bithiophene ( Figure ) .…”

Section: Wbg Copolymersmentioning

confidence: 99%

Recent Advances in Wide‐Bandgap Photovoltaic Polymers

2017

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The past decade has witnessed significant advances in the field of organic solar cells (OSCs). Ongoing improvements in the power conversion efficiency of OSCs have been achieved, which were mainly attributed to the design and synthesis of novel conjugated polymers with different architectures and functional moieties. Among various conjugated polymers, the development of wide-bandgap (WBG) polymers has received less attention than that of low-bandgap and medium-bandgap polymers. Here, we briefly summarize recent advances in WBG polymers and their applications in organic photovoltaic (PV) devices, such as tandem, ternary, and non-fullerene solar cells. Addtionally, we also dissuss the application of high open-circuit voltage tandem solar cells in PV-driven electrochemical water dissociation. We mainly focus on the molecular design strategies, the structure-property correlations, and the photovoltaic performance of these WBG polymers. Finally, we extract empirical regularities and provide invigorating perspectives on the future development of WBG photovoltaic materials.

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Section: Wbg Copolymersmentioning

confidence: 99%

Recent Advances in Wide‐Bandgap Photovoltaic Polymers

2017

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“…[27] Attachment of carefully selected side chains enables a rigid π-conjugated backbones to have satisfactory solubility for purification and device fabrication, and thus ensure low-cost largearea processing of the materials. [27] Attachment of carefully selected side chains enables a rigid π-conjugated backbones to have satisfactory solubility for purification and device fabrication, and thus ensure low-cost largearea processing of the materials.…”

Section: Solubility In Solventsmentioning

confidence: 99%

“…One of the most distinctive features of OSCs, as compared to their inorganic counterparts, is their solution processability, which arises mostly from their attached flexible side chains . Attachment of carefully selected side chains enables a rigid π‐conjugated backbones to have satisfactory solubility for purification and device fabrication, and thus ensure low‐cost large‐area processing of the materials .…”

Section: Insulating Units Covalently Attached To Organic Semiconductomentioning

confidence: 99%

Effective Use of Electrically Insulating Units in Organic Semiconductor Thin Films for High‐Performance Organic Transistors

Kang

Qiu

et al. 2016

Adv Elect Materials

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The electrical properties of organic semiconductors (OSCs), whether they are conjugated small molecules or polymers, can be tailored by incorporating electrically insulating units (EIUs), which are organic moieties consisting of nonconjugated units. EIUs can be introduced to a thin film by synthetically connecting them to the otherwise conjugated OSC molecules or by blending them in as separate EIU molecules with the OSCs during the thin‐film fabrication process. The engineered EIUs are capable of imparting various additional functions to the OSC thin film and improving their electrical properties. In this review article, a comprehensive overview of various effects of EIUs on OSC thin films and their consequent electrical performance when used as active layers in organic field‐effect transistors (OFETs) is provided. A broad range of studies of the synthetic approaches of incorporating EIUs, such as those using side chains, block copolymers, and conjugation‐break spacers, and of the blending approaches with organic insulators is discussed. Finally, a brief summary and perspectives for future research in this field are presented.

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“…The operation of solar cells is possible through photogeneration of charge carriers in a semiconductor material, and their consecutive separation and transport to the respective electrodes through the active layer [2][3][4]. Early organic solar cells utilized primarily bilayer architectures, whereas currently bulk heterojunction (BHJ) devices have become preeminent among these devices.…”

Section: Introductionmentioning

confidence: 99%

The Effect of Aromatic Diimide Side Groups on the π-Conjugated Polymer Properties

et al. 2018

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Abstract:The presented study describes the method for the synthesis and characterization of a new class of conjugated copolymers containing a perylenediimide (PDI) and naphthalene diimide (NDI) side groups. The main conjugated backbone is a donor-acceptor polymer poly[3,6-carbazole-alt-5,5-(4 ,7 -di-2-thienyl-2 ,1 ,3 -benzothiadiazole)] containing thiophene and carbazole as donor units and benzothiadiazole as an acceptor unit. The presented compounds were synthesized in a multistep synthesis. The polymerization was carried out by Suzuki or Stille coupling reaction. Redox properties of the studied polymers were tested in different conditions. Electrochemical investigation revealed independent reduction of the main polymer chain and diimide side groups. UV-Vis spectroscopy revealed the overlap of two absorption spectra. The difference between the electron affinity of the polymer main chain and that of the diimides estimated electrochemically is approximately 0.3 eV.

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Polymer design for solar cell – Current trend and future scenario

Cited by 25 publications

References 155 publications

Recent Advances in Wide‐Bandgap Photovoltaic Polymers

Recent Advances in Wide‐Bandgap Photovoltaic Polymers

Effective Use of Electrically Insulating Units in Organic Semiconductor Thin Films for High‐Performance Organic Transistors

The Effect of Aromatic Diimide Side Groups on the π-Conjugated Polymer Properties

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