Benzo[1,2-b:4,5-b′]dithiophene and benzotriazole based small molecule for solution-processed organic solar cells

Chen, Yanhua; Du, Zhengkun; Chen, Weichao; Liu, Qian; Sun, Liang; Sun, Mingliang; Yang, Renqiang

doi:10.1016/j.orgel.2013.11.034

Cited by 43 publications

(20 citation statements)

References 46 publications

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“…表 6 基于苯并三氮唑衍生物构筑的给体材料的电化学性质及相应的有机太阳能电池器件性能指标 Table 6 The electrochemical properties of donor materials based on the BTA derivatives and the photovoltaic characteristics of the corresponding solar cells 2014 年, 阳仁强等 [121] 以噻吩共轭侧链取代的 BDT 单元为中心给体单元, 以 FBTA 为共轭 π 桥, 设计合成了 D(CATBTzT)BDT(图 17b). 基于 D(CATBTzT)BDT/ PC 61 BM(w/w, 1∶1, 100 nm)器件的 V oc 为 0.93 V, J sc 为 6.0 mA/cm 2 , FF 为 64.0%, PCE 为 3.61%.…”

Section: 有机太阳能工作机理unclassified

Research Advances on Benzotriazole-based Organic Photovoltaic Materials

Bai¹,

Xue²,

Wang³

et al. 2021

Acta Chimica Sinica

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Over the past two decades, organic solar cells (OSCs) have been developed rapidly with the power conversion efficiency rapidly rising from less than 5% to over 18%, which is mainly promoted by the development of various new donor and acceptor materials. As a typical electron-deficient penta-heterocycle, benzotriazoles (BTAs) derivates a variety of high-performance photovoltaic materials, including polymer donor, small-molecule donor materials, as well as non-fullerenes acceptor and polymer acceptor. Among them, the J series of polymer donors and Y series of non-fullerenes acceptors are typical examples, and thus are specially highlighted in this review. Meanwhile, molecular design strategies of those BTA-based photovoltaic materials have also been discussed. It shows that donor-acceptor (D-A) conjugated strategy is still the most efficient thus far, where A units is the BTA unit or its derivatives, and D units commonly used in BTA-based photovoltaic materials are benzodithiophene, benzodifuran, dithienosilole, indacenodithiophene, thiophene, etc. The D-A strategy is both applied for donor molecules (with the molecular structure of D-A, D-π-A-π, D-A-D-A-D, etc.), and for acceptor molecules (with the molecular structure of A-D-A, A-π-D-π-A, A-DAD-A, etc.). By adjusting their molecular structures and/or pairing of differential D and A units, various properties such as absorption band and energy levels of molecules, as well as the morphology and charge carrier mobilities in OSCs can be well controlled. Furthermore, through side-chain engineering, such as flexible side-chains (alkyl, alkoxy, alkylthiol, alkylsilyl, etc.), conjugated side-chains (substituted-thiophene or benzene, etc.), electron-withdrawing groups (F atoms, Cl atoms, dicyanomethylene, etc.), their photovoltaic properties can be further regulated. Here, this review focuses on the research progress on BTA-based photovoltaic materials and related molecular design strategies developed in recent years, and also presents perspective on its future development.

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Section: 有机太阳能工作机理unclassified

Research Advances on Benzotriazole-based Organic Photovoltaic Materials

Bai¹,

Xue²,

Wang³

et al. 2021

Acta Chimica Sinica

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“…Conversely, quite a number of research in this area emphasized on production and processing of OSC (Chen et al, 2014a(Chen et al, , 2014b(Chen et al, , 2014c(Chen et al, , 2014dArrechea et al, 2015;Bagde et al, 2015Bagde et al, , 2016Ciro et al, 2017;Bai et al, 2014aBai et al, , 2014bKim et al, 2014Kim et al, , 2015Kim et al, , 2013Kan et al, 2014;Du et al, 2015;Lim et al, 2016;Mercier et al, 2014;Ni et al, 2014Ni et al, , 2015Yang et al, 2014Yang et al, , 2016Yang et al, , 2015aYang et al, , 2015bNarayanaswamy et al, 2016). Some focused on solution processed bulk heterojunction solar cells (Do et al, 2015;Dutta et al, 2012dDutta et al, , 2012bDutta et al, , 2012cKumar et al, 2015;Sharma et al, 2014;Liang et al, 2016;Lim et al, 2014).…”

Section: Introductionmentioning

confidence: 99%

Production and characterization of organic solar cells

Uyanga

Okwu

Adeoye

et al. 2018

WJE

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Purpose The study aims to carry out the production of a bulk heterojunction organic solar cell in a laboratory scale using a blend of poly (3-hexylthiopene) (P3HT) and [6, 6]-phenyl (C61) butyric acid methyl ether (PCBM). Design/methodology/approach Four inverted geometry organic solar cells were prepared based on 1:1 ratio of P3HT to PCBM and subjected to post annealing at different temperatures of 32, 120, 130 and 140°C. Solar cells were fabricated with structure glass/ITO/P3HT:PCBM/PEDOT:PSS/Au and characterized using Keithley 2400 series sourcemeter and a multimeter interfaced to a computer system with a LabVIEW software, which showed both dark and illumination current–voltage characteristic curves. Four reference cells were also fabricated with structure soda lime glass/P3HT:PCBM and annealed at different temperatures of 32, 120, 130 and 140°C. Findings The third organic solar cell prepared, Sample CITO, had the best performance with power conversion efficiency (PCE) of 2.0281 per cent, fill factor (FF) of 0.392, short circuit current of −0.0133 A and open circuit voltage of 0.389 V. Annealing of active layer was found to improve cell morphology, FF and PCE. Annealing of the active layer at 140°C resulted in a decrease of the PCE to 2.01 per cent. Research limitations/implications These findings are in good agreement with previous investigation in literature which reported that best annealing temperature for a 1:1 ratio blend of active material is 130°C. Ultraviolet–visible spectra on reference cells showed that sample CITO had wider absorption spectra with peak absorbance at a wavelength of 508 nm. Originality/value This research is purely original.

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“…The BHJ solar cells could be fabricated by [6,6]-phenyl-C 60 -butyric acid methyl ester (PCBM) and its derivatives generating PCE up to 7.4% [17]. Recently, OPV devices containing novel semiconductor polymers exhibiting PCE above 8% were proposed [25][26][27][28][29]. Therefore, studies of the relationship between photoactive material properties and device performances and design of an ideal electron-donating material are still major subjects for theoretical and experimental researchers [30,31].…”

Section: Introductionmentioning

confidence: 99%