论文标题
由于发光耦合而导致的多功效率单次光伏设备
Efficiency Increase in Multijunction Monochromatic Photovoltaic Devices Due to Luminescent Coupling
论文作者
论文摘要
我们提出了一个多官方的详细平衡模型，其中包括发光耦合，光捕获和非辐射重组的影响，适用于用于处理多功能太阳能电池和光子电源转换器的处理 - 旨在转换窄带光的光伏设备。该模型包括使用射线形式主义的镜面和兰伯特式的反射，并使用内部辐射效率处理非放射性过程。使用此模型，我们计算并优化了多个材料质量和轻型捕获方案的多声光转换器的效率。多期设备可随着电流降低，串联电阻损耗的降低允许增加电压。我们表明，即使设备具有吸收底物，效率也随着连接数量的增加而显着提高。当设备具有后反射器时，不会发生这种增加。我们使用简化的模型来解释这种效果，该模型说明了底物多肺设备中辐射损失减少的起源。
We present a multijunction detailed balance model that includes the effects of luminescent coupling, light trapping and nonradiative recombination, suitable for treatment of multijunction solar cells and photonic power converters -- photovoltaic devices designed to convert narrow-band light. The model includes both specular and Lambertian reflections using a ray-optic formalism and treats nonradiative processes using an internal radiative efficiency. Using this model, we calculate and optimize the efficiency of multijunction photonic power converters for a range of material qualities and light-trapping schemes. Multijunction devices allow increased voltage with lower current, decreasing series resistance losses. We show that efficiency increases significantly with increased number of junctions, even without series resistance, when the device has an absorbing substrate. Such an increase does not occur when the device has a back reflector. We explain this effect using a simplified model, which illustrates the origin of the decreased radiative losses in multijunction devices on substrates.
