Highly crystalline NiO nanoparticles synthesized through a facile thermolysis route were used as photocathode materials in p-type dye-sensitized solar cells resulting in open-circuit voltages exceeding 300 mV with an iodide/triiodide mediator.

In order to develop a long-lifetime MCP-PMT under high rates of circumstance, we investigated the degradation of the quantum efficiency (QE) of PMT’s with a multialkali photocathode. We found that not only positive ions, but also neutral residual gases would damage the photocathode resulting in an enhancement of the work function; their countermeasures were established in newly manufactured squ...

Dye-sensitized photoelectrochemical (DSPEC) water splitting is an attractive approach to convert and store solar energy into chemical bonds. However, the conversion efficiency of a DSPEC cell typically low due poor performance photocathode. Here, we demonstrate that Cu-doping improves functionalized NiO-based photocathode significantly. Femtosecond transient absorption experiments show longer-l...

A femtosecond single-bunch electron linear accelerator based on a photocathode rf gun was developed in Osaka University for the study of radiation-induced ultrafast physical and chemical reactions. A 32 MeV single electron bunch with bunch length of 98 fs in rms was generated successfully with a magnet bunch compressor, and was used as pump source to study the electroninduced ultrafast reaction...

Significant progress has been made in the last few years in ultra-short and high-brightness electron beam production and measurements. For many applications, such as laser and high-frequency RF (W-band) accelerators, and high-gain harmonic generation free electron laser, electron beams with bunch length and transverse emittance smaller than optical wavelength are required. The status of such sm...

We present a comparison between space charge calculations and direct measurements of the transverse phase space of space charge dominated electron bunches from a high voltage dc photoemission gun followed by an emittance compensation solenoid magnet. The measurements were performed using a double-slit emittance measurement system over a range of bunch charge and solenoid current values. The dat...

Correction for ‘A long-term stable organic semiconductor photocathode-based photoelectrochemical module system hydrogen production’ by Sehun Seo et al. , J. Mater. Chem. A 2022, 10 13247–13253, https://doi.org/10.1039/D2TA02322A.

Dye-sensitized photoelectrochemical cells (DSPECs) are a promising approach to produce solar fuels, e.g., by reduction of protons molecular hydrogen. Here, we present functional NiO photocathode...

The development of a large size gaseous detector of single photons, able to stably operate at high gain and high rate, and to provide good time resolution and insensitivity to magnetic field would be beneficial to future Cherenkov Imaging Counters. The detector could be based on the use of a multilayer architecture of THGEM electron multipliers coupled to a solid state CsI photocathode. A syste...