Surfactant-free nanoparticulate organic photovoltaics

Darwis, Darmawati; Holmes, Natalie P.; Elkington, Daniel; Kilcoyne, A. L. D.; Bryant, Glenn; Zhou, Xiaojing; Dastoor, Paul C.; Belcher, Warwick J.

doi:10.1016/j.solmat.2013.10.010

Cited by 53 publications

(67 citation statements)

References 21 publications

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“…6a,b). The increased absorption upon annealing could be due to the increased crystallinity and enhanced ordering of PTNT in the annealed films 22,57 , which was also observed in annealed PTNT:PC 71 BM BHJ films (presented in Fig. S6b and c).…”

Section: Accepted Manuscriptmentioning

confidence: 60%

“…[18][19][20] OPVs with active layers processed from a water or alcohol based nanoparticle dispersion has been reported in recent years. [21][22][23][24] These nanoparticles are processed from donor-acceptor blends either through a miniemulsion process with the presence of surfactant [25][26][27][28] or a precipitation method [21][22][23]29 . Furthermore, conjugated polymer nanoparticles were also reported to be synthesized by direct Suzuki-Miyaura dispersion polymerization.…”

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confidence: 99%

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Environmentally friendly preparation of nanoparticles for organic photovoltaics

Pan

Sharma

Gedefaw

et al. 2018

Organic Electronics

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Aqueous nanoparticle dispersions were prepared from a conjugated polymer poly(2,5-thiophene-alt-4,9-bis(2-hexyldecyl)-4,9-dihydrodithieno[3,2-c:3',2'-h][1,5]naphthyridine-5,10-dione) (PTNT) and fullerene blend utilizing chloroform as well as a non-chlorinated and environmentally benign solvent, o-xylene, as the miniemulsion dispersed phase solvent. The nanoparticles (NPs) in the solid-state film were found to coalesce and offered a smooth surface topography upon thermal annealing. Organic photovoltaics (OPVs) with photoactive layer processed from the nanoparticle dispersions prepared using chloroform as the miniemulsion dispersed phase solvent were found to have a power conversion efficiency M A N U S C R I P T A C C E P T E D ACCEPTED MANUSCRIPT2 (PCE) of 1.04%, which increased to 1.65% for devices utilizing NPs prepared from o-xylene.Physical, thermal and optical properties of NPs prepared using both chloroform and o-xylene were systematically studied using dynamic mechanical thermal analysis (DMTA) and photoluminescence (PL) spectroscopy and correlated to their photovoltaic properties. The PL results indicate different morphology of NPs in the solid state were achieved by varying miniemulsion dispersed phase solvent.

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Section: Accepted Manuscriptmentioning

confidence: 60%

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confidence: 99%

Environmentally friendly preparation of nanoparticles for organic photovoltaics

Pan

Sharma

Gedefaw

et al. 2018

Organic Electronics

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“…Nanoparticles of P3HT and P3HT:PC 61 Although surfactant-stabilized nanoparticles of P3HT:PC 61 BM have been shown to be smaller than the surfactant-free nanoparticles, 34 they form core-shell structures, with a PC 61 BM-rich core ,which may inhibit effective photogenerated charge separation and collection, whereas the surfactant-free precipitation method forms nanoparticles that possess a relatively uniform, blended morphology. 35 With the surfactant-stabilized nanoparticle approach, trace amounts of surfactant may remain incorporated in the active material and potentially interfere deleteriously with formation of the bulk-heterojunction, and thus impinge upon device performance and device lifetime.…”

Section: %;mentioning

confidence: 99%

Hydrogen evolution at conjugated polymer nanoparticle electrodes

et al. 2018

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Organic polymer nanoparticles have been gaining attention in photovoltaics as a means to control the morphology of polymer composite films for the purpose of studying bulk heterojunction, photoactive layers. This work investigates the preparation of nanostructured organic thin films from P3HT:PC 61 BM nanoparticles and their characterization as photoelectrodes for the photoelectrochemical reduction of hydrogen in acidic solutions. The morphology and optoelectronic properties of the nanostructured photocathodes are compared to conventional, solution-cast thin films of P3HT:PC 61 BM. The nanostructured photoelectrodes provide increased surface area compared to solution-cast films through control of the nanoscale morphology within each nanoparticle, leading to enhanced P3HT:PC 61 BM phase segregation. The photo-assisted deposition of platinum nanoparticles as hydrogen evolution reaction (HER) catalysts onto the nanostructured P3HT:PC 61 BM photocathodes facilitates the photoreduction of protons to H 2 .

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“…Their work shows that it is possible to generate a range of NP structures with quite small changes in formulation, and their work suggests that a uniform distribution of conjugated polymer and fullerene throughout the NP volume should deliver the best device performance [39]. The precipitation method has also been used to fabricate P3HT:PCBM NPOPVs, with Darwis et al demonstrating comparable or improved power conversion efficiencies with respect to the corresponding surfactant-based NPOPV devices [40]. Interestingly, the precipitated NPs are initially fully blended and do not exhibit the core-shell morphology characteristic of the surfactant-containing P3HT:PCBM NPs.…”

Section: The P3ht:pcbm Npopv Materials Systemmentioning

confidence: 99%

“…[42]. As is the case with previous work on OPV devices based on NPs synthesized using free precipitation [40], many depositions are required to form the continuous film needed for a working device. However, most encouragingly, this work does show that high efficiencies are possible using the NPOPV approach.…”

Section: The P3ht:icba Npopv Materials Systemmentioning

confidence: 99%

Solar Paint: From Synthesis to Printing

2014

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Abstract:Water-based polymer nanoparticle dispersions (solar paint) offer the prospect of addressing two of the main challenges associated with printing large area organic photovoltaic devices; namely, how to control the nanoscale architecture of the active layer and eliminate the need for hazardous organic solvents during device fabrication. In this paper, we review progress in the field of nanoparticulate organic photovoltaic (NPOPV) devices and future prospects for large-scale manufacturing of solar cells based on this technology.

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Surfactant-free nanoparticulate organic photovoltaics

Cited by 53 publications

References 21 publications

Environmentally friendly preparation of nanoparticles for organic photovoltaics

Environmentally friendly preparation of nanoparticles for organic photovoltaics

Hydrogen evolution at conjugated polymer nanoparticle electrodes

Solar Paint: From Synthesis to Printing

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