Enhanced Silicon Photovoltaic Efficiency by Solar Light Spectral Modulation via Photonically Tuned Porphyrin–Iron Oxide Hybrid Thin Films
Enhanced Silicon Photovoltaic Efficiency by Solar Light Spectral Modulation via Photonically Tuned Porphyrin–Iron Oxide Hybrid Thin Films
复制标题
通过光子调谐卟啉与氧化铁混合薄膜进行太阳光光谱调制，提高硅光伏效率
DOI：
10.1002/ente.202300144
复制
发表时间：
2023
影响因子：
3.8
通讯作者：
Shi, Donglu
中科院分区：
文献类型：
--
作者：
Lyu, Mengyao;Lin, Jou;Wang, Yuxin;Aulakh, Ovais;Ceja, Nathan;Ramesh, Mary Sheryl;Salazar, Elisabeth;Krupczak, John;Shi, Donglu
由于固有工艺的原因，光伏发电转换效率(PCE)的温度依赖性一直是太阳能应用面临的一个关键挑战。在这里，开发了一种替代策略，通过用一系列光子混合体来调制太阳光谱。用在紫外区和红外区有很强吸收的卟啉化合物和氧化铁的溶液合成了透明薄膜。这些光谱调制薄膜通过成分优化进行光子调谐，以吸收太阳光谱中近400 nm和1127 nm以上的光子，以减少热化和亚带隙吸收。这些光谱调制器被应用在商业硅板上方的特定配置中，以部分过滤模拟的太阳光。60 m in太阳辐射后，由于温度从22.9 °C升高到92.9 °C，硅板的PCE显著下降，导致PCE从25.1%下降到16.3%。在使用透明光谱调制器的情况下，在太阳照射60 分钟后，最大PCE保持在20.5%。基于降低的热化和亚带隙吸收，确定了PCE增强的机制。
The temperature dependency of photovoltaic power conversion efficiency (PCE) has been a key challenge to solar applications due to intrinsic processes. Herein, an alternative strategy is developed by modulating the solar light spectrum with a series of photonic hybrids. Transparent thin films are synthesized with the solutions of porphyrin compounds and iron oxides which exhibit strong absorptions in the UV and IR regions. These spectral modulating thin films are photonically tuned via compositional optimization to absorb photons near 400 nm and above 1127 nm from solar spectrum to reduce thermalization and sub‐bandgap absorption. These spectral modulators are applied in a particular configuration above a commercial silicon panel to partially filter the simulated solar light. The PCE of the silicon panel suffers a significant decrease due to temperature increase from 22.9 to 92.9 °C after 60 min solar irradiation, resulting in a PCE decrease from 25.1% to 16.3%. With the transparent spectral modulators, upon solar irradiation for 60 min, the maximum PCE has maintained at 20.5%. The mechanisms of PCE enhancement are identified based on reduced thermalization and sub‐bandgap absorption.