Three-dimensional graphene networks and RGO-based counter electrode for DSSCs

Yu, Haogang; Huang, Weiqiu; Sun, Yunfei; Li, Xufei; Li, Sen; Ma, Tao

doi:10.1039/c9ra02792k

Cited by 22 publications

(13 citation statements)

References 46 publications

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“…The EIS Nyquist plots are measured from high (1 MHz) to low (0.01 MHz) frequency at the V oc under one sun illumination (100 mW cm −2 ). The equivalent circuit model (Figure S3) includes the elements R S , R-CE , R-TiO 2 , and W S , representing the ohmic resistance of the FTO substrate ( R S ), interfacial charge-transfer resistance between the counter electrode and electrolyte ( R-CE ), interfacial charge-transfer resistance between the photoanode and electrolyte ( R-TiO 2 ), and the redox couple mass-transfer resistance ( W S , Warburg diffusion resistance) [40,41]. The electro-kinetic properties of the DSSCs are summarized in Table 1.…”

Section: Resultsmentioning

confidence: 99%

Surface Carbon Shell-Functionalized ZrO2 as Nanofiller in Polymer Gel Electrolyte-Based Dye-Sensitized Solar Cells

et al. 2019

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We prepare dye-sensitized solar cells (DSSCs) fabricated with a poly (ethylene glycol) based polymer gel electrolytes (PGEs) incorporating surface carbon shell-functionalized ZrO2 nanoparticles (ZrO2-C) as nanofillers (NFs). ZrO2 are polymerized via atom transfer radical polymerization (ATRP) using poly (ethylene glycol) methyl ether methacrylate (POEM) as a scaffold to prepare the ZrO2-C through carbonization. The power conversion efficiency of DSSC with 12 wt% ZrO2-C/PGEs is 5.6%, exceeding that with PGEs (4.4%). The enhanced efficiency is attributed to Lewis acid-base interactions of ZrO2-C and poly (ethylene glycol), catalytic effect of the carbon shells of ZrO2-C, which results in reduced crystallinity, enhanced ion conductivity of electrolytes, decreased counterelectrode/electrolyte interfacial resistance, and improved charge transfer rate. These results demonstrate that ZrO2-C introduction to PGEs effectively improves the performance of DSSCs.

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Section: Resultsmentioning

confidence: 99%

Surface Carbon Shell-Functionalized ZrO2 as Nanofiller in Polymer Gel Electrolyte-Based Dye-Sensitized Solar Cells

et al. 2019

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“…Preparation of GO, RGO and RGO/TiO 2 : GO was prepared by the modified Hummers' method. The optimized RGO samples were fabricated according to our previous works , . The RGO/TiO 2 composite is prepared by hydrothermal method.…”

Section: Methodsmentioning

confidence: 99%

High Performance Composite Photocatalysts based on Metal Organic Framework as the Modifier

Ren

Zhang

Huang

et al. 2020

Zeitschrift anorg allge chemie

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Photocatalysis attracts increasing attention because of the deteriorating environment pollution. Metal organic frameworks (MOFs) is deemed as one kind of promising modifiers to improve the photocatalytic performance of traditional semiconductors by their large BET areas. In this study, reduced graphene oxide (RGO) and Cu-BTC are utilized to decorate TiO 2 to enhance the corresponding photoactivity. Morphology of the as-prepared composite is detected by SEM and XRD curve, while the UV-and visible-light activities are estimated

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“…Furthermore, each parallel circuit combination from R1 to R4 is composed of double layer capacitance of different interface reactions. Tang et al reported rGO and 3D graphene network CE with an excellent PCE of 9.79% as a successful alternate to Pt CE to attain low‐cost and efficient PV devices . Owing to the attractive properties of graphene, Hsieh et al reported one‐dimensional carbon nanotubes (1D‐CNTs) and two‐dimensional graphene nanosheet (GNs) as a CE in DSSCs .…”

Section: Two‐dimensional Materials Based Counter Electrodementioning

confidence: 99%

“…Tang et al reported rGO and 3D graphene network CE with an excellent PCE of 9.79% as a successful alternate to Pt CE to attain low-cost and efficient PV devices. 92 Owing to the attractive properties of graphene, Hsieh et al reported one-dimensional carbon nanotubes (1D-CNTs) and two-dimensional graphene nanosheet (GNs) as a CE in DSSCs. 93 Figure 13D illustrates the schematic of CNT, and GNs-based CEs with star sign related to the sidewalls, nanosheets edges, and nanotube end.…”

Section: Graphene and Its Composites As Cementioning

confidence: 99%

Role of graphene and transition metal dichalcogenides as hole transport layer and counter electrode in solar cells

et al. 2019

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Summary Photovoltaic (PV) technology got much attention in the past few decades in developing advanced and environment friendly solar cells (SCs). However, high cost, unstable nature, and low efficiency are major limitations towards commercialization of SCs. To overcome the issues, two‐dimensional materials (2DMs) have been exploited due to low cost, high catalytic activity, fast charge separation, and better electrochemical performance. The review emphasis on (a) the electrochemical performance of graphene and transition metal dichalcogenides (TMDCs) as a hole transport layer (HTL) in SCs and (b) to explore low‐cost and effective counter electrode (CE) based on graphene and TMDCs for dye‐sensitized solar cell (DSSC). The review presents a comparative analysis of 2DMs as HTL and CE to attain highly efficient and low‐cost PV devices. Multiple combinations of the material with graphene, graphene oxide (GO), reduced graphene oxide (rGO), tungsten disulfide (WS2), molybdenum disulfide (MoS2) as HTL, and CE material in PV cells are discussed and comparatively analyzed. Numerous strategies are briefly discussed to enhance the efficiency of SCs by utilizing graphene and TMDCs based HTL and CEs. The review focuses on the recent progress in developing low‐cost and highly efficient PV devices by using 2DMs. Our study reveals that GO/PEDOT:PSS demonstrate a maximum power conversion efficiency (PCE) of 13.1% when fabricated at different revolutions. Moreover, our statistical analysis unveils that efficiency of the cell can be enhanced by optimizing the layer thickness, which provide a route to develop highly efficient and better performance SCs that can be exploited for future commercial applications.

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Three-dimensional graphene networks and RGO-based counter electrode for DSSCs

Abstract: Graphene is considered to be a potential replacement for the traditional Pt counter electrode (CE) in dye-sensitized solar cells (DSSCs).

Cited by 22 publications

References 46 publications

Surface Carbon Shell-Functionalized ZrO2 as Nanofiller in Polymer Gel Electrolyte-Based Dye-Sensitized Solar Cells

Surface Carbon Shell-Functionalized ZrO2 as Nanofiller in Polymer Gel Electrolyte-Based Dye-Sensitized Solar Cells

High Performance Composite Photocatalysts based on Metal Organic Framework as the Modifier

Role of graphene and transition metal dichalcogenides as hole transport layer and counter electrode in solar cells

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