Metal Nanoparticle-Decorated Two-Dimensional Molybdenum Sulfide for Plasmonic-Enhanced Polymer Photovoltaic Devices

Chuang, Ming Kai; Yang, Shun; Chen, Fang‐Chung

doi:10.3390/ma8085252

Cited by 26 publications

(17 citation statements)

References 44 publications

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“…Singha et al, 2015). There are other cases where doping has been successfully executed on MoS 2 but for such cases, when comparing the Raman spectra for the doped and the pristine MoS 2 , no significant change is observed (Laskar et al, 2014;Chuang et al, 2015). However, in our study, most of the expected results mentioned above were not observed upon applying p-type doping on MoS 2 using Au.…”

Section: Characterization Of Doped Moscontrasting

confidence: 45%

Electrically Enhanced Transition Metal Dichalcogenides as Charge Transport Layers in Metallophthalocyanine-Based Solar Cells

et al. 2020

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Transitional metal dichalcogenides (TMDs), such as molybdenum disulfide (MoS2) have found application in photovoltaic cells as a charge transporting layer due to their high carrier mobility, chemical stability, and flexibility. In this research, a photovoltaic device was fabricated consisting of copper phthalocyanine (CuPc) as the active layer, exfoliated and Au-doped MoS2, which are n-type and p-type as electron and hole transport layers, respectively. XRD studies showed prominent peaks at (002) and other weak reflections at (100), (103), (006), and (105) planes corresponding to those of bulky MoS2. The only maintained reflection at (002) was weakened for the exfoliated MoS2 compared to the bulk, which confirmed that the material was highly exfoliated. Additional peaks at (111) and (200) planes were observed for the Au doped MoS2. The interlayer spacing (d002) was calculated to be 0.62 nm for the trigonal prismatic MoS2 with the space group P6m2. Raman spectroscopy showed that the E21g (393 cm−1) and A1g (409 cm−1) peaks for exfoliated MoS2 are closer to each other compared to their bulk counterparts (378 and 408 cm−1, respectively) hence confirming exfoliation. Raman spectroscopy also confirmed doping of MoS2 by Au as the Au-S peak was observed at 320 cm−1. Exfoliation was further confirmed by SEM as when moving from bulky to exfoliated MoS2, a single nanosheet was observed. Doping was further proven by EDS, which detected Au in the sample suggesting the yield of a p-type Au-MoS2. The fabricated device had the architecture: Glass/FTO/Au-MoS2/CuPc/MoS2/Au. A quadratic relationship between I-V was observed suggesting little rectification from the device. Illuminated I-V characterization verified that the device was sensitive and absorbed visible light. Upon illumination, the device was able to absorb photons to create electron-hole pairs and it was evident that semipermeable junctions were formed between Au-MoS2/CuPc and CuPc/MoS2 as holes and electrons were extracted and separated at respective junctions generating current from light. This study indicates that the exfoliated and Au-MoS2 could be employed as an electron transporting layer (ETL) and hole transporting layer (HTL), respectively in fabricating photovoltaic devices.

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Section: Characterization Of Doped Moscontrasting

confidence: 45%

Electrically Enhanced Transition Metal Dichalcogenides as Charge Transport Layers in Metallophthalocyanine-Based Solar Cells

et al. 2020

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“…MoS 2 in combination with MoO 3 and MoS 2 with Au nanoparticles were also used as hole extraction layers in organic solar cells by Qin et al [227] and Yang et al [228] respectively. Chuang et al [229] used nanosheets of MoS 2 along with Au nanoparticles as an electron extraction layer and obtained PCE of 4.91%.…”

Section: Mos 2 As a Diverse Role Materials In Organic Solar Cellsmentioning

confidence: 99%

Graphene to Advanced MoS2: A Review of Structure, Synthesis, and Optoelectronic Device Application

et al. 2020

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In contrast to zero-dimensional (0D), one-dimensional (1D), and even their bulk equivalents, in two-dimensional (2D) layered materials, charge carriers are confined across thickness and are empowered to move across the planes. The features of 2D structures, such as quantum confinement, high absorption coefficient, high surface-to-volume ratio, and tunable bandgap, make them an encouraging contestant in various fields such as electronics, energy storage, catalysis, etc. In this review, we provide a gentle introduction to the 2D family, then a brief description of transition metal dichalcogenides (TMDCs), mainly focusing on MoS2, followed by the crystal structure and synthesis of MoS2, and finally wet chemistry methods. Later on, applications of MoS2 in dye-sensitized, organic, and perovskite solar cells are discussed. MoS2 has impressive optoelectronic properties; due to the fact of its tunable work function, it can be used as a transport layer, buffer layer, and as an absorber layer in heterojunction solar cells. A power conversion efficiency (PCE) of 8.40% as an absorber and 13.3% as carrier transfer layer have been reported for MoS2-based organic and perovskite solar cells, respectively. Moreover, MoS2 is a potential replacement for the platinum counter electrode in dye-sensitized solar cells with a PCE of 7.50%. This review also highlights the incorporation of MoS2 in silicon-based heterostructures where graphene/MoS2/n-Si-based heterojunction solar cell devices exhibit a PCE of 11.1%.

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“…An additional and appealing molecular strategy commonly used to functionalize solution-processed TMD nanosheets envisages the growth of noble metal nanoparticles (NPs), mainly Au, 126,127 Pd, 128,129 Pt 130,130 and AgNPs, 131,132 and their interactions with the 2D systems (Fig. 9).…”

Section: Defectsmentioning

confidence: 99%

Tailoring the physicochemical properties of solution-processed transition metal dichalcogenides via molecular approaches

2019

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Metal Nanoparticle-Decorated Two-Dimensional Molybdenum Sulfide for Plasmonic-Enhanced Polymer Photovoltaic Devices

Cited by 26 publications

References 44 publications

Electrically Enhanced Transition Metal Dichalcogenides as Charge Transport Layers in Metallophthalocyanine-Based Solar Cells

Electrically Enhanced Transition Metal Dichalcogenides as Charge Transport Layers in Metallophthalocyanine-Based Solar Cells

Graphene to Advanced MoS2: A Review of Structure, Synthesis, and Optoelectronic Device Application

Tailoring the physicochemical properties of solution-processed transition metal dichalcogenides via molecular approaches

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