Perovskite solar cells based self-charging power packs: Fundamentals, applications and challenges

Yang, Yang; Hoang, Minh Tam; Bhardwaj, Aman; Wilhelm, Michael; Mathur, Sanjay; Wang, Hongxia

doi:10.1016/j.nanoen.2021.106910

Cited by 48 publications

(43 citation statements)

References 150 publications

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“…This vertical growth is mostly attributed to the facile processing chemistry and exceptional optoelectronic properties of hybrid organic-inorganic perovskites (e.g., (Me 2 N)PbI 3 ), such as their suitable bandgaps, high optical absorption coefficients, long carrier diffusion lengths and high carrier mobility [ 6 , 7 ]. Given their high PCEs and expanding market presence, PSCs are the optimal choice for the envisaged integrated self-charging power packs [ 8 ]. In a typical thin-film solar cell structure, the perovskite absorber layer is sandwiched between an electron transporting layer (ETL) and a hole transporting layer (HTL) [ 9 , 10 ].…”

Section: Introductionmentioning

confidence: 99%

Tantalum Oxide as an Efficient Alternative Electron Transporting Layer for Perovskite Solar Cells

et al. 2022

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Electron transporting layers facilitating electron extraction and suppressing hole recombination at the cathode are crucial components in any thin-film solar cell geometry, including that of metal–halide perovskite solar cells. Amorphous tantalum oxide (Ta2O5) deposited by spin coating was explored as an electron transport material for perovskite solar cells, achieving power conversion efficiency (PCE) up to ~14%. Ultraviolet photoelectron spectroscopy (UPS) measurements revealed that the extraction of photogenerated electrons is facilitated due to proper alignment of bandgap energies. Steady-state photoluminescence spectroscopy (PL) verified efficient charge transport from perovskite absorber film to thin Ta2O5 layer. Our findings suggest that tantalum oxide as an n-type semiconductor with a calculated carrier density of ~7 × 1018/cm3 in amorphous Ta2O5 films, is a potentially competitive candidate for an electron transport material in perovskite solar cells.

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Section: Introductionmentioning

confidence: 99%

Tantalum Oxide as an Efficient Alternative Electron Transporting Layer for Perovskite Solar Cells

et al. 2022

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“…Interestingly, photoenhancement shows a positive relevance to the current densities for the test case without cooling water, while it demonstrates a negative tendency if cooling water is not employed. Such a difference may be caused by the much faster photoelectric process rather than the photothermal effect because it may take more time to heat up the electrode and electrolyte via photo-to-thermal conversion [39,40]. Figure 6c further illustrates the photoelectric effect on charge transfer in the electrochemical process.…”

Section: Resultsmentioning

confidence: 99%

Fabrication of Zn-Cu-Ni Ternary Oxides in Nanoarrays for Photo-Enhanced Pseudocapacitive Charge Storage

Pan

et al. 2022

Nanomaterials

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To meet the increasing demands of energy consumption, sustainable energy sources such as solar energy should be better employed to promote electrochemical energy storage. Herein, we fabricated a bifunctional photoelectrode composed of copper foam (CF)-supported zinc-nickel-copper ternary oxides in nanoarrays (CF@ZnCuNiOx NAs) to promote photo-enhanced pseudocapacitive charge storage. The as-fabricated CF@ZnCuNiOx NAs have shown both photosensitive and pseudocapacitive characteristics, demonstrating a synergistic effect on efficient solar energy harvest and conversion. As a result, a high areal specific capacitance of 2741 mF cm−2 (namely 418 μAh cm−2) under light illumination can be calculated at 5 mA cm−2, which delivered photo-enhancement of 38.3% compared to that obtained without light. In addition, the photoelectric and photothermal effects of the light energy on pseudocapacitive charge storage have been preliminarily studied and compared. This work may provide some evidence on the different mechanisms of photoelectric/thermal conversion for developing solar-driven energy storage devices.

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“…During the photocharging process, the photosensitive material on the photoelectrode is excited to generate electron-hole pairs. [11,35,36] The generated electrons will then be transferred to the energy storage electrode, and the holes will participate in a redox reaction and finally be neutralized by electrons from the counter electrode. [37,38] During discharge, the charge will return from the energy storage electrode to the counter electrode, and the cations or anions in the electrolyte between these two electrodes will provide the balance.…”

Section: Optimization Of Photoresponsive Electrode Materialsmentioning

confidence: 99%

Integrated Photovoltaic Charging and Energy Storage Systems: Mechanism, Optimization, and Future

Wang

Liu

Zhang

et al. 2022

Small

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As an emerging solar energy utilization technology, solar redox batteries (SPRBs) combine the superior advantages of photoelectrochemical (PEC) devices and redox batteries and are considered as alternative candidates for large‐scale solar energy capture, conversion, and storage. In this review, a systematic summary from three aspects, including: dye sensitizers, PEC properties, and photoelectronic integrated systems, based on the characteristics of rechargeable batteries and the advantages of photovoltaic technology, is presented. The matching problem of high‐performance dye sensitizers, strategies to improve the performance of photoelectrode PEC, and the working mechanism and structure design of multienergy photoelectronic integrated devices are mainly introduced and analyzed. In particular, the devices and improvement strategies of high‐performance electrode materials are analyzed from the perspective of different photoelectronic integrated devices (liquid‐based and solid‐state‐based). Finally, future perspectives are provided for further improving the performance of SPRBs. This work will open up new prospects for the development of high‐efficiency photoelectronic integrated batteries.

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Perovskite solar cells based self-charging power packs: Fundamentals, applications and challenges

Cited by 48 publications

References 150 publications

Tantalum Oxide as an Efficient Alternative Electron Transporting Layer for Perovskite Solar Cells

Tantalum Oxide as an Efficient Alternative Electron Transporting Layer for Perovskite Solar Cells

Fabrication of Zn-Cu-Ni Ternary Oxides in Nanoarrays for Photo-Enhanced Pseudocapacitive Charge Storage

Integrated Photovoltaic Charging and Energy Storage Systems: Mechanism, Optimization, and Future

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