Inhibiting formation of Zn2+/N179 molecules insulation layer and degradation of ZnO-based dye-sensitized solar cells via quasi-solid-state electrolytes

Li, Gang; Lei, Sheng; Li, Tingyu; Zhang, Wendong; Wang, Kaiying

doi:10.1016/j.apsusc.2019.05.198

Cited by 6 publications

(2 citation statements)

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“…Although ZnO‐based photoelectrodes exhibited exceptional properties compared with TiO 2 , they still have drawbacks in electron transport at the ZnO/dye interface 37,38 . The ZnO may dissolve and etch by the acidic dye and form an insulating Zn 2+ layer, leading to high electron recombination at the interface of ZnO and dye 39,40 . Although ZnO has better conductivity, the acidic nature of dye binding groups used in DSSCs will dramatically reduce the chemical stability of ZnO by dissolving it to form a precipitate of the dye–Zn 2+ complex, which indirectly lower the electron injection and dye generation of DSSCs 41 .…”

Section: Introductionmentioning

confidence: 99%

“…37,38 The ZnO may dissolve and etch by the acidic dye and form an insulating Zn 2+ layer, leading to high electron recombination at the interface of ZnO and dye. 39,40 Although ZnO has better conductivity, the acidic nature of dye binding groups used in DSSCs will dramatically reduce the chemical stability of ZnO by dissolving it to form a precipitate of the dye-Zn 2+ complex, which indirectly lower the electron injection and dye generation of DSSCs. 41 Hence, researchers attempted to overcome this problem by incorporating potential materials such as graphene and its derivatives in the ZnO photoelectrode.…”

Section: Introductionmentioning

confidence: 99%

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Zinc oxide/graphene nanocomposite as efficient photoelectrode in dye‐sensitized solar cells: Recent advances and future outlook

Mahalingam

Low

Omar

et al. 2022

Intl J of Energy Research

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Summary Dye‐Sensitized Solar Cells (DSSCs), also known as Grätzel cells, are a third‐generation photovoltaic technology that has garnered extensive interest due to its simplicity of fabrication, economical, and relatively high power conversion efficiency (PCE). The PCE of the photovoltaic cells is primarily related to the architecture of the cells, as well as the electrodes and electrolyte employed. Using zinc oxide (ZnO) coupled with two‐dimensional graphene as photoelectrode enables efficient charge transfer and minimizes electron–hole recombination in the DSSCs, resulting in improved performance. This review outlines the feasibility and performance enhancement of ZnO/graphene nanocomposite and its derivatives as photoelectrode for DSSCs. The structural features, optical properties, electron transport, and dye interaction of the ZnO/graphene nanocomposite‐based photoelectrode were considered in this review. In addition, the limitations of ZnO/graphene derivatives as photoelectrodes and their solutions were extensively discussed, as well as their prospects. The ZnO/graphene‐based photovoltaic cells exhibit an efficiency of up to 11.5% under different dyes and electrolytes. The recent progress achieved with this photoelectrode, which is a viable substitute for titanium dioxide (TiO2), is also thoroughly reviewed.

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Section: Introductionmentioning

confidence: 99%