Thermionic energy converters are solid‐state heat engines that have the potential to
produce electricity with efficiencies of over 30% and area‐specific power densities of 100 …

Concentrating solar power (CSP) is a mainstream of solar energy utilization, and thermionic
emission is a potential way to convert concentrated solar radiation into power with a …

Thermionic energy conversion (TEC) is the direct conversion of heat into electricity by the
mechanism of thermionic emission, the spontaneous ejection of hot electrons from a surface …

The high work function of electrode materials inhibits the improvement of the performance of
thermionic energy converters. Space charge effect and near-field heat transfer are also …

In this study, five mathematical models were fitted in the absence of space charge with
experimental data to find a more appropriate model and predict the emission current density …

We present a comprehensive analysis of a dual, micro-gap thermionic-thermoelectric hybrid
energy converter by developing a detailed theoretical model of the system. The space …

We investigate the performance of a microgap vacuum thermionic energy converter by
considering loss mechanisms due to the space-charge effect and interelectrode radiative …

A new model of the thermionic energy converter (TEC) configured with the graphene-based
cathode is proposed, which includes the thermal radiation between the cathode and the …

Thermionic conversion, due to its simple solid-state structure capable of converting heat to
electricity directly, is promising for concentrated solar power. However, because of the …

Semiconductors have been used in solar energy conversion for decades based on the
photovoltaic effect. An important challenge of photovoltaics is the undesired heat generated …