Electrospray as a Fabrication Tool in Organic Photovoltaics

Zhao, Xinyan; Lojewski, Brandon; Yang, Weiwei; Zhu, Tongjun; Mi, Baoxiu; Gao, Zhiqiang; Huang, Wei; Deng, Weiwei

doi:10.1166/rnn.2012.1011

Cited by 16 publications

(7 citation statements)

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“…Thin-film materials of functional molecules, such as organic small molecules/polymers and metal complexes, have attracted intensive attention in photoelectronic applications, such as solar cells, light-emitting diodes, thin-film transistors, flexible displays, and electrochromic cells. − The film deposition techniques, such as electropolymerization, − covalent self-assembly, spin coating and drop casting, , electrostatic self-assembly, and electrospray, can usually be used for fabricating thin films of functional molecules. Among these techniques, electropolymerization presents the following competitive advantages: easy operation, cost-effective instrumentation, very rapid simultaneous realization of electrosynthesis of polymers and separation of the polymers and monomers, controllable film coverage and thickness, and varying structures and doping degrees by simply changing electropolymerization parameters, such as electropolymerization time or the number of potential sweep cycles and precursor molecules, , although spin coating and electrospray have been used in industry for film fabrication.…”

Section: Introductionmentioning

confidence: 99%

Unusual Photoelectrochemical Properties of Electropolymerized Films of a Triphenylamine-Containing Organic Small Molecule

Yang

Wang

et al. 2019

Langmuir

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The electropolymerized films of poly(L) n on an indium−tin oxide (ITO) electrode was prepared by anodic electrooxidation of a dichloromethane solution of a triphenylamine-carrying organic molecule L and were characterized/studied by ultraviolet−visible absorption spectroscopy, X-ray photoelectron spectroscopy, X-ray diffraction, electrochemical impedance spectroscopy, cyclic voltammetry, and photoelectrochemical measurements. Poly(L) n films were found to show surface-controlled TPA •+1/0 associated quasi-reversible redox and exceptionally high photocurrent generation properties. At a zero external bias potential and under 100 mW/cm 2 white light irradiation, a photoelectrochemical device composed of a poly(L) 1 -modified ITO as the working electode, a platinum disk counter electrode, and saturated calomel electrode reference electrode in a 0.1 M Na 2 SO 4 aqueous solution exhibited a significant cathode photocurrent density of 2.2 μA/cm 2 , which could be switched to be anodic and outperform most previously reported molecule-based modified ITO electrodes under similar experimental conditions. The results indicate that poly(L) n films offer a number of future perspectives ranging from organic photovoltaic to photoelectrochemical catalysis and sensing.

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Section: Introductionmentioning

confidence: 99%

Unusual Photoelectrochemical Properties of Electropolymerized Films of a Triphenylamine-Containing Organic Small Molecule

Yang

Wang

et al. 2019

Langmuir

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“…1 In order to further enhance the PCE of OPV devices, various methods have been developed in order to improve the morphology of polymer:fullerene BHJ materials, for example, thermal annealing, 2 3 solvent annealing, 4 5 the use of processing additives [6][7][8][9][10][11][12] and some other work. [13][14][15] It has been revealed that the power conversion efficiency (PCE) is expected to exceed 10% for solution processed solar cells. 16 The morphology of BHJ blends is critically important to optimize the efficiency.…”

Section: Introductionmentioning

confidence: 99%

1,8-Diiodooctane as the Processing Additive to Improve the Efficiency of P3HT:PC<SUB>61</SUB>BM Solar Cells

Fan¹,

Zhao²,

Cui³

et al. 2014

j. nanosci. nanotech.

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Controlling the blend morphology is critical for achieving high power conversion efficiency in polymer/fullerene bulk heterojunction (BHJ) photovoltaic devices. As a simple and effective method to control morphology, adding processing additives has been widely applied in the organic BHJ solar cells. In this paper, we demonstrate that adding 1,8-diiodooctane as a processing additives is an effective method to improve the morphology and the efficiency of bulk heterojunctions (BHJ) solar cells based on the regioregular poly(3-hexylthiophene) (P3HT) and a soluble fullerene derivative ([6,6]-phenyl C61-butyric acid methyl ester, PC61BM). We investigated the unique way in which the 1,8-diiodooctane plays the rule to enhance the performance of solar cells according to different morphology and crystallinity of active layers prepared with and without the additive. The morphology is studied with atomic force microscopy (AFM) and Grazing Incidence X-ray Diffraction (GIXRD). We also find a balance between a large interfacial area for exciton dissociation and continuous pathways for carrier transportation when the additive is used.

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“…These newly discovered semiconducting polymers can cover a wider range of the solar spectrum, have improved interchain ordering, and possess increased stability at elevated temperatures. Most importantly, the liquid phase of such polymer solutions enable a wide range of processing methods such as screen printing [18], pad printing [19], inkjet printing [20; 21], Energy and Environmental Engineering 2(2): 48-54, 2014 49 spray coating [22], and electrospray printing [23]. These new methods make it possible to fabricate flexible, stretchable, and low cost solar cells on curved surfaces.…”

Section: Introductionmentioning

confidence: 99%

Solar Energy Collection on a Spherical Surface

Lin

Deng²,

Gu³

et al. 2014

eee

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Solar energy is the most abundant energy source on earth. This paper suggests a new concept of solar collection that prints the solar cells directly onto a spherical surface, or a balloon. The energy collection efficiency of such a spherical surface is analyzed and compared with a conventional flat-panel collector. An experimental apparatus is built to test the solar energy reception from all directions, including the scattering and reflections from various terrain. The results show that the usage of spherical collectors such as solar balloons is a viable approach.

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Electrospray as a Fabrication Tool in Organic Photovoltaics

Cited by 16 publications

References 0 publications

Unusual Photoelectrochemical Properties of Electropolymerized Films of a Triphenylamine-Containing Organic Small Molecule

Unusual Photoelectrochemical Properties of Electropolymerized Films of a Triphenylamine-Containing Organic Small Molecule

1,8-Diiodooctane as the Processing Additive to Improve the Efficiency of P3HT:PC<SUB>61</SUB>BM Solar Cells

Solar Energy Collection on a Spherical Surface

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