A bright outlook on organic photoelectrochemical cells for water splitting

Steier, Ludmilla; Holliday, Sarah

doi:10.1039/c8ta07036a

Cited by 59 publications

(65 citation statements)

References 107 publications

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“…Due to the rapid progress in strongly absorbing FREAs with highly tunable E g opt , where FREAs with broad absorption in the NIR region could be suitable for rear sub‐cell while narrow absorption in the visible region could be for front sub‐cell. Moreover, high V OC from a series connected tandem OSCs could be applied in applications such as water splitting . Tandem OSCs parameters are summarized in Table 7 .…”

Section: Other Aspects Of Frea Oscsmentioning

confidence: 99%

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Recent Progress in Molecular Design of Fused Ring Electron Acceptors for Organic Solar Cells

Dey

2019

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139

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The quest for sustainable energy sources has led to accelerated growth in research of organic solar cells (OSCs). A solution‐processed bulk‐heterojunction (BHJ) OSC generally contains a donor and expensive fullerene acceptors (FAs). The last 20 years have been devoted by the OSC community to developing donor materials, specifically low bandgap polymers, to complement FAs in BHJs. The current improvement from ≈2.5% in 2013 to 17.3% in 2018 in OSC performance is primarily credited to novel nonfullerene acceptors (NFA), especially fused ring electron acceptors (FREAs). FREAs offer unique advantages over FAs, like broad absorption of solar radiation, and they can be extensively chemically manipulated to tune optoelectronic and morphological properties. Herein, the current status in FREA‐based OSCs is summarized, such as design strategies for both wide and narrow bandgap FREAs for BHJ, all‐small‐molecule OSCs, semi‐transparent OSC, ternary, and tandem solar cells. The photovoltaics parameters for FREAs are summarized and discussed. The focus is on the various FREA structures and their role in optical and morphological tuning. Besides, the advantages and drawbacks of both FAs and NFAs are discussed. Finally, an outlook in the field of FREA‐OSCs for future material design and challenges ahead is provided.

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Section: Other Aspects Of Frea Oscsmentioning

confidence: 99%

“…Moreover, high V OC from a series connected tandem OSCs could be applied in applications such as water splitting. [267] Tandem OSCs parameters are summarized in Table 7.…”

Section: Tandem Oscsmentioning

confidence: 99%

Recent Progress in Molecular Design of Fused Ring Electron Acceptors for Organic Solar Cells

Dey

2019

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139

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“…With regard to photocurrent value, it is related to the efficiency of exciton separation, which depends on the exciton binding energy (EB). The lower the binding energy, the easier the separation of hole and electron 28 . The EB is inversely…”

Section: Photoelectrocatalytic Synthesis 221 General Characteristimentioning

confidence: 99%

“…But more commonly, a photoelectrode is a multi-layered system. Although it is possible that the semiconductor is effective as both an electrocatalyst (that is, works with low overpotential) and a photocurrent generator, usually the efficiency can be increased by splitting the light-harvesting and the redox processes to two different materials 28 . Thanks to this, the best available catalytic and PV systems can be combined together, utilizing their optimal properties for a given purpose.…”

Section: Comparison Of Photoelectrodes and Photovoltaic Cellsmentioning

confidence: 99%

“…Just like in the case of electrocatalysis, a good photoelectrode has low overpotential, is selective towards the desired process (i.e. operates with high faradaic efficiency) and demonstrates high stability, both chemical and of generated photocurrent 28 . While the main purpose of incorporating a semiconducting system is utilization of the light energy, high conversion efficiency is also desired.…”

Section: Design and Operation Of Photoelectrodesmentioning

confidence: 99%

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