Surface Plasmon Enhanced Organic Solar Cells with a MoO<sub>3</sub> Buffer Layer

Su, Zisheng; Wang, Lidan; Li, Yantao; Zhang, Guang; Zhao, Haifeng; Yang, Haijian; Ma, Yuejia; Chu, Bei; Li, Wenlian

doi:10.1021/am404441n

Cited by 59 publications

(38 citation statements)

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“…The shape and size of the NPs can affect the position and shape of the LSPR peak . Spectral broadening can be attributed to a decrease in the distance between NPs and a shift in the wavelength can be attributed to the increase in the size of NPs, consistent with previous studies . To investigate the influence of Ag NPs on structural changes in the perovskite phase, X‐ray diffraction (XRD) patterns of the perovskite films with and without Ag NPs were collected.…”

Section: Resultssupporting

confidence: 70%

“…The shape of the Ag NPs is both circular and crescent‐like for the evaporation time t = 100 s. Once the deposition duration was increased to greater than 100 s, all the NPs self‐assembled into crescent shapes. Usually, evaporated Ag NPs have island shapes, not crescent shapes . The mechanism by which normal Ag islands form involves the diffusion of the first Ag atoms across the substrate surface and self‐assembly into island shapes.…”

Section: Resultsmentioning

confidence: 99%

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Effect of Plasmonic Ag Nanoparticles on the Performance of Inverted Perovskite Solar Cells

et al. 2019

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Recently, perovskite solar cells (PSCs) have attracted phenomenal research interest due to their potential as the next‐generation photovoltaics. Despite rapid development in this field, further increasing their power conversion efficiency (PCE) remains a critical issue for the commercialization of PSCs. Herein, the application of Ag nanoparticle (NP) layers via vapor‐phase deposition onto perovskite active layers is investigated. The formation of unique, crescent‐shaped Ag NPs is confirmed by scanning electron microscopy (SEM), which shows that the NPs self‐assemble along the grain boundaries of perovskite, leading to their unique shape. The PCE for devices incorporating an optimized size of Ag NPs of 79 ± 6 nm increase from 11.63% to 13.46% with an improvement factor of 15.74%. The increase in PCE is can be attributed to an increase in short‐circuit current density (Jsc) that is assigned to an increase in optical path length and absorption. NPs exhibit the ability to increase the optical path length of photons in the device due to the near‐field and far‐field enhancement (plasmonic scattering) and consequently may act to improve the photon‐to‐electron conversion efficiency (ΔIPCE) and PCE of PSCs. Moreover, ultraviolet photoelectron spectroscopy reveals a decrease in hole injection barrier (ϕh), which also contributes to enhanced performance.

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Section: Resultssupporting

confidence: 70%

Section: Resultsmentioning

confidence: 99%

Effect of Plasmonic Ag Nanoparticles on the Performance of Inverted Perovskite Solar Cells

et al. 2019

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“…Other studies have attributed enhanced device performance to morphological changes to the charge transport layers or active layer, in conjunction with enhanced light absorption . Morphological changes with plasmonic nanostructure integration are not well understood and advanced characterization work to investigate these changes are lacking, despite their common occurrence . Previous reports have also demonstrated improved short circuit current ( J sc ) which is not mediated by increased light absorption after plasmonic particle integration .…”

Section: Role Of Plasmonics In Organic Solar Cellsmentioning

confidence: 99%

Plasmonics in Organic and Perovskite Solar Cells: Optical and Electrical Effects

Chan

Wright

Elumalai

et al. 2016

Advanced Optical Materials

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Solution processed thin‐film solar technologies, such as organic photovoltaics, and more recently, perovskite solar cells, may provide low‐cost electricity generation. These technologies suffer from insufficient light absorption due to thin absorber layers. Plasmonic nanostructures have been incorporated in both technologies, initially with the aim of increasing light absorption, but reports have also shown significant enhancement in electrical characteristics in devices. Enhancement mechanisms that are facilitated by plasmonic nanostructures such as improved exciton dissociation and charge carrier transport, can occur concurrently with improved light absorption. This work surveys the myriad enhancement mechanisms and, importantly, discusses the extent of current understanding, as well as insights gained in plasmonics applications thus far. Given the substantial opportunities, the continuous focus on characterization and interpretation of enhancement mechanisms is imperative to unlock the full potential of plasmonic organic and perovskite solar cells. In particular, electrical or electronic effects from plasmonic nanostructure integration deserves further attention as a promising complement to improvements in device performance from optical effects.

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“…Introducing a functional layer for light absorption and conversion is a widely used method to improve photovoltaic devices, [23][24][25][26][27][28] and it is especially suitable to enhance the photoresponse and PCE of ultraviolet for the graphene/Si diode according to the above analysis. TiO 2 is a common photocatalytic material with strong absorbance in the ultraviolet range.…”

Section: Introductionmentioning

confidence: 99%

TiO₂ enhanced ultraviolet detection based on a graphene/Si Schottky diode

Zhu

Zhang

et al. 2015

J. Mater. Chem. A

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Graphene/Si has been proved to form a quality Schottky junction with high photoelectric conversion efficiency at AM 1.5. However, for the ultraviolet portion of the incident light, the photoelectric performance will degrade significantly due to severe absorption and recombination at the front surface.Herein, to realize enhanced ultraviolet detection with a graphene/Si diode, TiO 2 nanoparticles (NPs, 3-5 nm) are synthesized and spin-coated on the graphene surface to improve the photoresponse in the ultraviolet region. According to our results, the conversion efficiency of the graphene/Si diode at 420 nm and 350 nm increases by 72.7% and 100% respectively with TiO 2 coating. Then C À2 -V measurements of both TiO 2 and graphene/Si diode are performed to analyze the electronic band structure of the TiO 2 / graphene/Si system, based on which we finally present the enhancement mechanism of photodetection using TiO 2 NPs. † Electronic supplementary information (ESI) available: Transmission spectrum of graphene, XPS spectrum of graphene, J-V characteristics and detection performance of the device. See

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Surface Plasmon Enhanced Organic Solar Cells with a MoO₃ Buffer Layer

Cited by 59 publications

References 50 publications

Effect of Plasmonic Ag Nanoparticles on the Performance of Inverted Perovskite Solar Cells

Effect of Plasmonic Ag Nanoparticles on the Performance of Inverted Perovskite Solar Cells

Plasmonics in Organic and Perovskite Solar Cells: Optical and Electrical Effects

TiO₂ enhanced ultraviolet detection based on a graphene/Si Schottky diode

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Surface Plasmon Enhanced Organic Solar Cells with a MoO3 Buffer Layer

Cited by 59 publications

References 50 publications

Effect of Plasmonic Ag Nanoparticles on the Performance of Inverted Perovskite Solar Cells

Effect of Plasmonic Ag Nanoparticles on the Performance of Inverted Perovskite Solar Cells

Plasmonics in Organic and Perovskite Solar Cells: Optical and Electrical Effects

TiO2 enhanced ultraviolet detection based on a graphene/Si Schottky diode

Contact Info

Product

Resources

About

Surface Plasmon Enhanced Organic Solar Cells with a MoO₃ Buffer Layer

TiO₂ enhanced ultraviolet detection based on a graphene/Si Schottky diode