论文标题

发光太阳能:PV/热杂交发电,用于具有成本效益的可调度太阳能

Luminescent solar power: PV/thermal hybrid electricity generation for cost effective dispatchable solar energy

论文作者

Haviv, Shimry, Revivo, Natali, Kruger, Nimrod, Manor, Assaf, Khachatryan, Bagrat, Shustov, Michael, Rotschild, Carmel

论文摘要

当今太阳能的挑战不是光伏(PV)发电的成本,已经与化石燃料价格竞争,而是公用事业规模的储能和供应灵活性。存在低成本的热量存储(TES),但依赖昂贵的热发动机。在这里,我们介绍了发光太阳能(LSP)的概念,其中阳光被吸收在光致发光(PL)吸收器中,然后是与相邻PV细胞的带红移PL发射发射。这样,PV细胞的运行效率几乎与直接照明下的高效一样,但热量过多。 PL-ABSORBER温度由于热化而升高,从而使其储存过多的热量,后来可以将其转换为电力。实验证明了量身定制的发光材料,每1 kWh的(虚拟)热发动机电动性每1 kWh,两种来源之间的动态变化。这种理想的混合动力系统可能会导致基础负载解决方案的电力成本降低。

The challenge in solar energy today is not the cost of photovoltaic (PV) electricity generation, already competing with fossil fuel prices, but rather utility-scale energy storage and flexibility in supply. Low-cost thermal energy storage (TES) exists but relies on expensive heat engines. Here, we introduce the concept of luminescent solar power (LSP), where sunlight is absorbed in a photoluminescent (PL) absorber, followed by red-shifted PL emission matched to an adjacent PV cell's band-edge. This way the PV cell operates nearly as efficiently as under direct illumination, but with minimal excessive heat. The PL-absorber temperature rises due to thermalization, allowing it to store the excessive heat, which can later be converted into electricity. Tailored luminescent materials that support an additional 1.5kWh PV-electricity for every 1 kWh of (virtual) heat engine-electricity, with a dynamic shift between the two sources are experimentally demonstrated. Such an ideal hybrid system may lead to a potential reduction in the cost of electricity for a base-load solution.

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