An irreversible model of the thermophotonic cell (TPC) with a heated forward-based light-emitting diode (LED) as an emitter and a photovoltaic cell (PVC) is established. The performances of the TPC are optimized and compared with those of the thermophotovoltaic cell (TPVC) based on finite-time thermodynamics. The results obtained show that there exist the optimally operating ranges of the voltages and band-gap energies of the LED and PVC. The thermal flow emitted from the heated LED dramatically exceeds that from the pure thermal emitter. The maximum efficiency of the TPC is less than that of the TPVC, whereas the maximum power density of the TPC surpasses that of the TPVC under an arbitrary emitter temperature. The TPC has the advantages of the relatively high optimal band-gap energies and relatively low-operating temperatures so that it is easier to be made than the TPVC.

中文翻译：

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热光子电池的参数优化设计和性能改进

建立了热光子电池（TPC）的不可逆模型，该模型以加热的前向发光二极管（LED）作为发射器和光伏电池（PVC）。基于有限时间热力学对 TPC 的性能进行优化并与热光伏电池 (TPVC) 的性能进行比较。结果表明，LED和PVC的电压和带隙能量存在最佳工作范围。受热 LED 发出的热流大大超过了纯热发射器发出的热流。TPC 的最大效率低于 TPVC，而在任意发射器温度下，TPC 的最大功率密度超过 TPVC。