Parametric optimum design of a photon-enhanced thermionic solar cell

Thermally enhanced photoinduced electron emission from nitrogen-doped diamond films on silicon substrates

“…Notably, a new emission mechanism that combines photoexcitation and thermal excitation, namely, photon-enhanced thermionic emission (PETE), has been proposed to describe results for Cs-coated p-type GaN [3]. Several theoretical studies have described possible applications of PETE in concentrated solar-thermionic energy conversion devices [4][5][6][7][8][9][10][11]. In a recent experimental study, photon-enhanced thermionic emission using a p-type GaAs/p-type AlGaAs heterojunction interface was explored [12], and the results indicated the spatial separation of photon absorption and electron emission in a PETE device.…”

Near-field enhanced thermionic energy conversion for renewable energy recycling

“…As mentioned in the introduction, the ideal energy conversion efficiency of photon-enhanced thermionic emission has been predicted to be above 50% [25], and even when loss mechanisms are considered, the efficiency is still in the range of 30-40% [26][27][28]. For the case of NETEC system, its energy conversion efficiency should be defined as the ratio of the electrical power output, P NETEC , to the heat input to the NETEC system, or near-field thermal radiation absorbed by the cathode, Q E→C : Figure 5 shows the efficiency of the NETEC system for different emitter temperatures, T E , and cathode electron affinities, χ C , respectively.…”

Investigation on the performance of a photon-enhanced thermionic emission solar cell

“…成的高性能等温太阳能电池的理论模型, 讨论了该模 型的输出电压、聚光度、阳极功函数和半导体禁带宽 度等参数对PETSC的影响 [4] . Segev等人 [5] 还研究了 PETSC的损失机制和背表面场效应对PETSC性能的影 响. Su等人 [6] 对基于p型半导体硅阴极材料的PETSC进 行了数值模拟研究, 构建两个极板的热平衡方程, 在不 同禁带宽度和电子亲和势的条件下, 数值求解两个极 板的温度和电流密度, 并得到最大效率及其优化运行 条件. 同时, Su等人 [7] 还研究了空间电荷效应对PETSC 的最大效率和优化设计的影响, 结果表明, 在微尺度下 空间电荷效应对PETSC的性能有较大影响.…”