P3HT:PCBM Bulk-Heterojunctions: Observing Interfacial and Charge Transfer States with Surface Photovoltage Spectroscopy

Surface photovoltage spectroscopy resolves wavelength-dependent photochemical charge transfer between irregularly shaped BiVO4 and Cu2O particles for the first time.

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Photochemical charge transfer observed in nanoscale hydrogen evolving photocatalysts using surface photovoltage spectroscopy

Energy & Environmental Science ◽

10.1039/c5ee01701g ◽

2015 ◽

Vol 8 (10) ◽

pp. 2970-2976 ◽

Cited By ~ 59

Author(s):

J. Wang ◽

J. Zhao ◽

F. E. Osterloh

Keyword(s):

Charge Transfer ◽

Space Charge ◽

Water Splitting ◽

Surface Photovoltage ◽

Solar Water ◽

Surface Photovoltage Spectroscopy ◽

Solar Water Splitting ◽

Inorganic Nanostructures ◽

Carrier Separation

The application of inorganic nanostructures for solar water splitting is currently limited by our understanding of photochemical charge transfer on the nanoscale, where space charge layers are less effective for carrier separation.

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The Fluorescent and Photovoltaic Properties of Meso-Teraphenyl Porphyrins with Different Substituents

Advanced Materials Research ◽

10.4028/www.scientific.net/amr.415-417.1387 ◽

2011 ◽

Vol 415-417 ◽

pp. 1387-1390

Author(s):

Wei Yin ◽

Huan Bao Fa ◽

Chang Guo Chen ◽

Li Ping Zhang

Keyword(s):

Charge Transfer ◽

Fluorescence Intensity ◽

Surface Photovoltage ◽

Charge Transfer Process ◽

Photovoltaic Properties ◽

Fluorescent Intensity ◽

Surface Photovoltage Spectroscopy ◽

Spectral Bands ◽

P Type ◽

Derivatives Of

The fluorescent and photovoltaic properties of derivatives of selected substituted meso-phenylporphyrins were studied. It was found that the fluorescent intensity could be enhanced by the electron-donating substituent but weakened by the electron-withdrawing subsituent. The photovoltaic properties and charge transfer process of the compounds were investigated by surface photovoltage spectroscopy (SPS) techniques, which revealed that all the compounds are p-type semiconductors. The spectral bands of all porphyrins could be ascribed to π→π* transitions. Comparing with the fluorescent spectral showed that the stronger the fluorescence intensity of porphyrin was, the weaker the surface photovoltage intensity of it was.

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Use of surface photovoltage spectroscopy to probe energy levels and charge carrier dynamics in transition metal (Ni, Cu, Fe, Mn, Rh) doped SrTiO3 photocatalysts for H2 evolution from water

Journal of Materials Chemistry A ◽

10.1039/c7ta10934b ◽

2018 ◽

Vol 6 (14) ◽

pp. 5774-5781 ◽

Cited By ~ 30

Author(s):

Xiaoqing Ma ◽

Xiaoli Cui ◽

Zeqiong Zhao ◽

Mauricio A. Melo ◽

Emily J. Roberts ◽

...

Keyword(s):

Charge Transfer ◽

Charge Carrier ◽

Energy Levels ◽

Carrier Dynamics ◽

Surface Photovoltage ◽

H2 Evolution ◽

Surface Photovoltage Spectroscopy ◽

Charge Carrier Dynamics ◽

Donor States ◽

Charge Transfer Dynamics

The photovoltage onset reveals the energetics of the donor states, while photovoltage size and reversibility provide information on the charge transfer dynamics of the dopants and their ability to oxidize methanol.

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An In-Situ Reaction Route to Molecular Level Dispersed Bisimide and ZnO Nanorod Hybrids with Efficient Photo-Induced Charge Transfer

Nanoscale Research Letters ◽

10.1186/s11671-021-03504-3 ◽

2021 ◽

Vol 16 (1) ◽

Author(s):

Chunzheng Lv ◽

Lirong He ◽

Jiahong Tang ◽

Feng Yang ◽

Chuhong Zhang

Keyword(s):

Charge Transfer ◽

Electric Field ◽

Self Assembly ◽

Molecular Level ◽

Surface Photovoltage ◽

Zno Nanorod ◽

In Situ Reaction ◽

Perylene Bisimide ◽

Induced Charge

AbstractAs an important photoconductive hybrid material, perylene/ZnO has attracted tremendous attention for photovoltaic-related applications, but generally faces a great challenge to design molecular level dispersed perylenes/ZnO nanohybrids due to easy phase separation between perylenes and ZnO nanocrystals. In this work, we reported an in-situ reaction method to prepare molecular level dispersed H-aggregates of perylene bisimide/ZnO nanorod hybrids. Surface photovoltage and electric field-induced surface photovoltage spectrum show that the photovoltage intensities of nanorod hybrids increased dramatically for 100 times compared with that of pristine perylene bisimide. The enhancement of photovoltage intensities resulting from two aspects: (1) the photo-generated electrons transfer from perylene bisimide to ZnO nanorod due to the electric field formed on the interface of perylene bisimide/ZnO; (2) the H-aggregates of perylene bisimide in ZnO nanorod composites, which is beneficial for photo-generated charge separation and transportation. The introduction of ordered self-assembly thiol-functionalized perylene-3,4,9,10-tetracarboxylic diimide (T-PTCDI)/ ZnO nanorod composites induces a significant improvement in incident photo-to-electron conversion efficiency. This work provides a novel mentality to boost photo-induced charge transfer efficiency, which brings new inspiration for the preparation of the highly efficient solar cell.

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