期刊
PHYSICAL REVIEW LETTERS
卷 125, 期 6, 页码 -出版社
AMER PHYSICAL SOC
DOI: 10.1103/PhysRevLett.125.067401
关键词
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资金
- Winton Studentship
- Oppenheimer Studentship
- Engineering and Physical Sciences Research Council (EPSRC) Doctoral Training Centre in Photovoltaics (CDT-PV)
- European Research Council (ERC) (HYPERION) [756962]
- Marie Sklodowska-Curie actions under the European Union's Horizon 2020 research and innovation programme [841386]
- Royal Society
- Tata Group [UF150033]
- EPSRC [EP/S030638/1, EP/R023980/1]
- European Research Council (ERC) [756962] Funding Source: European Research Council (ERC)
- EPSRC [EP/S030638/1, EP/R023980/1] Funding Source: UKRI
- Marie Curie Actions (MSCA) [841386] Funding Source: Marie Curie Actions (MSCA)
Photon recycling has received increased attention in recent years following its observation in halide perovskites. It has been shown to lower the effective bimolecular recombination rate and thus increase excitation densities within a material. Here we introduce a general framework to quantify photon recycling which can be applied to any material. We apply our model to idealized solar cells and light-emitting diodes based on halide perovskites. By varying controllable parameters which affect photon recycling, namely, thickness, charge trapping rate, nonideal transmission at interfaces, and absorptance, we quantify the effect of each on photon recycling. In both device types, we demonstrate that maximizing absorption and emission processes remains paramount for optimizing devices, even if this is at the expense of photon recycling. Our results provide new insight into quantifying photon recycling in optoelectronic devices and demonstrate that photon recycling cannot always be seen as a beneficial process.
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