Plasmonic Ag@Oxide Nanoprisms for Enhanced Performance of Organic Solar Cells

Du, Peng; Jing, Pengtao; Li, Di; Cao, Yinghui; Liu, Zhenyu; Sun, Zaicheng

doi:10.1002/smll.201402757

Cited by 54 publications

(43 citation statements)

References 39 publications

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“…Related studies have also shown that PL and light absorption by P3HT can be greatly enhanced by light scattering species. 65,66 Hence, the relatively high PL and UV-visible values for the P3HT-MG HTM ( Fig. 4c and d) and P3HT-MG film ( Fig.…”

Section: Perovskite Solar Cells Prepared Using Htm-mg Blendsmentioning

confidence: 94%

Reducing hole transporter use and increasing perovskite solar cell stability with dual-role polystyrene microgel particles

Mokhtar

Whittaker

et al. 2017

Nanoscale

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Perovskite solar cells (PSCs) are a disruptive technology that continues to attract considerable attention due to their remarkable and sustained power conversion efficiency increase. Improving PSC stability and reducing expensive hole transport material (HTM) usage are two aspects that are gaining increased attention. In a new approach, we investigate the ability of insulating polystyrene microgel particles (MGs) to increase PSC stability and replace the majority of the HTM phase. MGs are sub-micrometre crosslinked polymer particles that swell in a good solvent. The MGs were prepared using a scalable emulsion polymerisation method. Mixed HTM/MG dispersions were subsequently spin-coated onto PSCs and formed composite HTM-MG layers. The HTMs employed were poly(triaryl amine) (PTAA), poly(3-hexylthiophene) (P3HT) and Spiro-MeOTAD (Spiro). The MGs formed mechanically robust composite HTMs with PTAA and P3HT. In contrast, Spiro-MG composites contained micro-cracks due the inability of the relatively small Spiro molecules to interdigitate. The efficiencies for the PSCs containing PTAA-MG and P3HT-MG decreased by only ∼20% compared to control PSCs despite PTAA and P3HT being the minority phases. They occupied only ∼35 vol% of the composite HTMs. An unexpected finding from the study was that the MGs dispersed well within the PTAA matrix. This morphology aided strong quenching of the CHNHPbICl fluorescence. In addition, the open circuit voltages for the PSCs prepared using P3HT-MG increased by ∼170 mV compared to control PSCs. To demonstrate their versatility the MGs were also used to encapsulate P3HT-based PSCs. Solar cell stability data for the latter as well as those for PSCs containing composite HTM-MG were both far superior compared to data measured for a control PSC. Since MGs can reduce conjugated polymer use and increase stability they have good potential as dual-role PSC additives.

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Section: Perovskite Solar Cells Prepared Using Htm-mg Blendsmentioning

confidence: 94%

Reducing hole transporter use and increasing perovskite solar cell stability with dual-role polystyrene microgel particles

Mokhtar

Whittaker

et al. 2017

Nanoscale

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“…The Ag@TiO 2 core-shell NPs were synthesized through an improvedm ethod of our previousr eports. [21,22] Transmission electron microscopy (TEM) image of Ag@TiO 2 NPs was shown in Figure1A. It presented core-shell structure in at riangle shape and TiO 2 was fully wrapped in the layer of Ag NPs.…”

Section: Ag@tio 2 Nanoprisms Characterizationsmentioning

confidence: 99%

Ag@TiO₂ Nanoprisms with Highly Efficient Near‐Infrared Photothermal Conversion for Melanoma Therapy

Nie

Zhao

et al. 2019

Chemistry An Asian Journal

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Melanoma is ap rimary reason of death from skin cancer and associated with high lethality.P hotothermalt herapy (PTT) has been developed into ap owerful cancer treatment technique in recenty ears. Here, we createdalow-cost and high-performance PTT agent,A g@TiO 2 NPs, which possesses ah igh photothermal conversion efficiency of % 65 % and strong near-infrared (NIR) absorption about8 08 nm. Ag NPs were synthesized using at wo-step methoda nd coated with TiO 2 to obtain Ag@TiO 2 NPs by af acile sol-gel method. Because of the oxide, Ag@TiO 2 NPs exhibit remarkable high photothermal conversion efficiencies and biocompatibility in vivo and in vitro. Cytotoxicity and therapeutic efficiency of photothermal cytotoxicity of Ag@TiO 2 NPs were tested in B16-F10c ells and C57BL/6J mice. Under light irradiation, the elevated temperature causes cell death in Ag NPs-treated (100 mgmL À1 )c ells in vitro (both p < 0.01). In the case of subcutaneous melanoma tumor model, Ag@TiO 2 NPs (100 mgmL À1 )w ere injected into the tumor and irradiated with a8 08 nm laser of 2Wcm À2 for 1minute. As ac onsequence, the tumor volumeg radually decreased by NIRl aser irradiation with only as ingle treatment. The results demonstrate that Ag@TiO 2 NPs are biocompatible and an attractive photothermal agent for cutaneous melanoma by local delivery.[a] Dr.

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“…The sol–gel route is another widely used method. Sun group has prepared Ag@TiO 2 core–shell nanoprisms using a mixture of citric acid and tetrabutyl titanite, affording a TiO 2 sol–gel precursor; this precursor was subsequently injected into the Ag nanoprism solution under vigorous stirring . The TiO 2 shell thickness was tuned via the control of the reaction time.…”

Section: Synthesis Of Various Shell‐isolated Nanoparticlesmentioning

confidence: 99%

Shell‐Isolated Nanoparticle‐Enhanced Raman and Fluorescence Spectroscopies: Synthesis and Applications

Zhang

Yin

et al. 2018

Advanced Optical Materials

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Shell‐isolated nanoparticles (SHINs) composed of a protective shell and a plasmonic metal core have been extensively used in plasmon‐enhanced Raman and fluorescence spectroscopy. Whereby, SHIN‐enhanced Raman spectroscopy has effectively overcome the material and morphology limitations for traditional surface‐enhanced Raman spectroscopy and demonstrates advanced properties in various fields including surface science, chemical analysis, biological and medical assays, and material science. Meanwhile, the fluorescence of the optical species can be enhanced smartly by SHINs due to the localized surface‐plasmon resonance effect of the SHINs, the so called SHIN‐enhanced fluorescence. In this review, the synthesis of the SHINs is discussed according to the shell materials. Then, the developments and advancements in application of the SHINs in Raman and fluorescence spectroscopies are comprehensively described. Finally, potential future developments for SHINs and SHIN‐enhanced spectroscopy are presented.

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Plasmonic Ag@Oxide Nanoprisms for Enhanced Performance of Organic Solar Cells

Cited by 54 publications

References 39 publications

Reducing hole transporter use and increasing perovskite solar cell stability with dual-role polystyrene microgel particles

Reducing hole transporter use and increasing perovskite solar cell stability with dual-role polystyrene microgel particles

Ag@TiO₂ Nanoprisms with Highly Efficient Near‐Infrared Photothermal Conversion for Melanoma Therapy

Shell‐Isolated Nanoparticle‐Enhanced Raman and Fluorescence Spectroscopies: Synthesis and Applications

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Plasmonic Ag@Oxide Nanoprisms for Enhanced Performance of Organic Solar Cells

Cited by 54 publications

References 39 publications

Reducing hole transporter use and increasing perovskite solar cell stability with dual-role polystyrene microgel particles

Reducing hole transporter use and increasing perovskite solar cell stability with dual-role polystyrene microgel particles

Ag@TiO2 Nanoprisms with Highly Efficient Near‐Infrared Photothermal Conversion for Melanoma Therapy

Shell‐Isolated Nanoparticle‐Enhanced Raman and Fluorescence Spectroscopies: Synthesis and Applications

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Ag@TiO₂ Nanoprisms with Highly Efficient Near‐Infrared Photothermal Conversion for Melanoma Therapy