Si photocathode with Ag-supported dendritic Cu catalyst for CO<sub>2</sub>reduction

Gurudayal, -; Beeman, J. W.; Bullock, James; Wang, Hao; Eichhorn, Johanna; Towle, Clarissa M.; Javey, Ali; Toma, Francesca M.; Mathews, Nripan; Ager, Joel W.

doi:10.1039/c8ee03547d

Cited by 105 publications

(126 citation statements)

References 76 publications

Supporting

Mentioning

116

Contrasting

Order By: Relevance

“…2a). 31 Although such limitations can be relieved by utilizing dual photoelectrodes (i.e., a photocathode with the CB edge more negative than the reduction potentials and a photoanode with the VB edge more positive than the oxidation potentials) or Z-scheme photocatalytic systems, the choice of semiconducting materials is still narrow due to the difficulties of band engineering in inorganic materials: Si, 32 Cu 2 O, 33,34 etc. are used as photocathodes; and WO 3 , 35,36 Fe 2 O 3 , 37,38 BiVO 4 , 39,40 etc.…”

Section: Challenges In Conventional Conversion Systemsmentioning

confidence: 99%

Porous framework-based hybrid materials for solar-to-chemical energy conversion: from powder photocatalysts to photoelectrodes

Kim

Ryu

2021

Inorg. Chem. Front.

View full text Add to dashboard Cite

show abstract

Section: Challenges In Conventional Conversion Systemsmentioning

confidence: 99%

Porous framework-based hybrid materials for solar-to-chemical energy conversion: from powder photocatalysts to photoelectrodes

Kim

Ryu

2021

Inorg. Chem. Front.

View full text Add to dashboard Cite

show abstract

“…Consequently, the device must provide a resulting voltage of at least 2 V or more to driven the system work. [111] Single-junction solar cells hardly afford the high working voltage, so the series-connected solar cells used for CO 2 reduction system arise at the historic moment. PSCs were applied to the CO 2 conversion in a series of three junctions initially with V OC of 3.1 V, and finally a solarto-CO efficiency about 6.5%, [112] shown as Figure 12a,b.…”

Section: Solar-driven Conversion Of Carbon Dioxidementioning

confidence: 99%

Two‐Terminal Perovskite‐Based Tandem Solar Cells for Energy Conversion and Storage

Yang

et al. 2021

Small

View full text Add to dashboard Cite

Nowadays, the power conversion efficiency (PCE) of single-junction solar cells is almost approaching the theoretical ceiling of 31-33% according to Shockley-Queisser (S-Q) single-junction efficiency limitation. [2] However, the output voltage of the most efficient single-junction solar cells such as GaAs is about 1 V, which is insufficient for practical application to subsequently drive energy storage/utilization devices. Fortunately, by connecting multiple absorber layers to fabricate the tandem solar cells, the output voltage could be significantly increased as well as the PCE. According to S-Q analysis, the theoretical efficiencies of two-junction and three-junction solar cells could be as high as 42% and 49%, respectively. [3] Importantly, the output voltage of the tandem solar cells would be nearly doubled or tripled correspondingly. As an example, the open-circuit voltage (V OC ) of single line silicon solar cells is only about 0.6 V, which could be increased up to 1.21 V by stacking CdSe on the top of silicon. [4] Recently, with the rapid development of high-voltage perovskite solar cells (PSCs), the V OC of the tandem solar cells is remarkably improved. Typically, the highest V OC can reach up to 2.3 V for two-junction tandem solar cells, consisting of two CH 3 NH 3 PbI 3 (MAPbI 3 ) subcells. [5] Though higher voltage could be achieved by adding more junctions, such as 3.21 V in three-junction tandem cells, [6] 4.227 V for four-junction tandem cells, [7] 4.40 V for five-junction tandem cells, [8] and calculated 5.15 V for six-junction tandem cells, [9] yet the cost and technological requirements would increase exponentially. It is noted that although solar modules with simple serial connected design can also provide high voltage, the light management is still the same as single-junction cells, which could never beyond S-Q limitation. Tandem solar cells could provide a possibility for breaking physical limitation of traditional single-junction solar cells. Besides, tandem solar cells could also be basic unit for solar modules to obtain higher efficiency.As shown in Figure 1, tandem solar cells could deliver high PCE and V OC by segmented light adsorption. The PCE of solar cells is determined mainly by two processes: light absorption and carriers separation/collection. Usually, short-circuit current density (J SC ) would be lower than theory limit because of incomplete light absorption and sluggish collection of generated carriers, whereas a reduced Voc or fill factor (FF) reflectsThe organic-inorganic hybrid perovskite solar cells present a rapid improvement on power conversion efficiency from 3.8% to 25.5% in the past decades. Owing to the tuneable bandgaps, low-cost, and ease of fabrication, perovskites become ideal candidate materials for fabricating tandem solar cells, especially for efficient and high-voltage monolithic two-terminal devices. In this review, an overview of recent advances in various monolithic perovskitebased tandem solar cells with a focus on the key challenges is provided. Subsequent...

show abstract

“…Therefore, in many cases the deposition of a passivation interlayer, typically based on metal oxides, will be mandatory (Figure d). It should be noted that the surface catalytic layer should not be a compact metallic film since, in this case, the catalysis and reaction selectivity at the surface of such architecture (“buried‐junction”) would be governed by the same principles as in the case of an electrically biased metallic electrode . Still another attractive strategy involves immobilization of molecular catalysts onto passivated semiconductors, whereby the molecular catalyst would drive the selective reaction at high turnover with charges being supplied by the illuminated semiconductor (Figure e).…”

Section: Figurementioning

confidence: 99%

Selectivity of Chemical Conversions: Do Light‐Driven Photoelectrocatalytic Processes Hold Special Promise?

Beránek

2019

Angewandte Chemie

View full text Add to dashboard Cite

One of the great challenges in chemistry is the development of innovative catalytic processes. In this context, significant opportunities are currently opening up for technologies based on electrocatalysis and photoelectrocatalysis, as these can drive various valuable catalytic redox transformations under very mild conditions. However, many catalytic processes lead to various different products of different value, and the technological attractiveness of catalytic processes depends to a large extent on their selectivity towards a specific desired product. In this Viewpoint, I propose and explore the idea that, due to the distinct features of interfacial energetics at illuminated semiconductors, light‐driven photoelectrocatalytic processes at well‐designed semiconductors represent a particularly attractive platform for the development of highly efficient systems for selective catalytic conversions. The investigations of selectivity and synthetic aspects of photoelectrocatalysis should gain momentum, especially as they also promise commercially viable applications on a more immediate time scale as compared to, for example, the light‐driven production of hydrogen.

show abstract

Si photocathode with Ag-supported dendritic Cu catalyst for CO₂reduction

Abstract: Solar-driven photocathode converts carbon dioxide to C2and C3products.

Cited by 105 publications

References 76 publications

Porous framework-based hybrid materials for solar-to-chemical energy conversion: from powder photocatalysts to photoelectrodes

Porous framework-based hybrid materials for solar-to-chemical energy conversion: from powder photocatalysts to photoelectrodes

Two‐Terminal Perovskite‐Based Tandem Solar Cells for Energy Conversion and Storage

Selectivity of Chemical Conversions: Do Light‐Driven Photoelectrocatalytic Processes Hold Special Promise?

Contact Info

Product

Resources

About

Si photocathode with Ag-supported dendritic Cu catalyst for CO2reduction

Abstract: Solar-driven photocathode converts carbon dioxide to C2and C3products.

Cited by 105 publications

References 76 publications

Porous framework-based hybrid materials for solar-to-chemical energy conversion: from powder photocatalysts to photoelectrodes

Porous framework-based hybrid materials for solar-to-chemical energy conversion: from powder photocatalysts to photoelectrodes

Two‐Terminal Perovskite‐Based Tandem Solar Cells for Energy Conversion and Storage

Selectivity of Chemical Conversions: Do Light‐Driven Photoelectrocatalytic Processes Hold Special Promise?

Contact Info

Product

Resources

About

Si photocathode with Ag-supported dendritic Cu catalyst for CO₂reduction