Treviño Rodríguez Karina, Sánchez Vázquez Astrid Iriana, Ruiz Valdés Juan Jacobo, Ibarra Rodríguez Jorge, Paredes Figueroa María Guadalupe, Porcar García Samuel, Carda Castelló Juan Bautista, Álvarez Méndez Anabel
Laboratorio de Materiales III, División de Estudios de Posgrado, Facultad de Ciencias Químicas, Universidad Autónoma de Nuevo León, Guerrero y Progreso S/N, Col. Treviño, C.P., Monterrey 64570, Mexico.
Universidad de Monterrey, Av. Ignacio Morones Prieto 4500-Pte, Zona Valle Poniente, San Pedro Garza García 66238, Mexico.
Materials (Basel). 2023 Apr 3;16(7):2848. doi: 10.3390/ma16072848.
Because of the increasing demand for photovoltaic energy and the generation of end-of-life photovoltaic waste forecast, the feasibility to produce glass substrates for photovoltaic application by recycling photovoltaic glass waste (PVWG) material was analyzed. PVWG was recovered from photovoltaic house roof panels for developing windows glass substrates; PVWG was used as the main material mixed with other industrial waste materials (wSG). The glass was casted by air quenching, annealed, and polished to obtain transparent substrates samples. Fluorine-doped tin oxide (FTO) was deposited as back contact on the glass substrates by spray pyrolysis. The chemical composition of the glass materials was evaluated by X-ray fluorescence (XRF), the thermal stability was measured by differential thermal analysis (DTA) and the transmittance was determined by UV-VIS spectroscopy. The surface of the glass substrates and the deposited FTO were observed by scanning electron microscopy (SEM), the amorphous or crystalline state of the specimens were determined by X-ray diffraction (XRD) and the sheet resistance was evaluated by the four-point probe method. The sheet resistance of the deposited FTO on the wSG substrate was 7.84 ± 3.11 Ω/□, lower than that deposited on commercial soda-lime glass (8.48 ± 3.67 Ω/□), meaning that this material could present improved conduction of the produced electrons by the photovoltaic effect. This process may represent an alternative to produce glass substrates from waste materials that could be destined for photovoltaic applications, especially the production of ecological photovoltaic windows.
由于对光伏能源的需求不断增加以及对报废光伏废物产生量的预测，分析了通过回收光伏玻璃废料（PVWG）来生产光伏应用玻璃基板的可行性。从光伏屋顶面板中回收PVWG以开发窗户玻璃基板；PVWG用作与其他工业废料（wSG）混合的主要材料。通过空气淬火、退火和抛光玻璃来获得透明基板样品。通过喷雾热解在玻璃基板上沉积氟掺杂氧化锡（FTO）作为背接触。通过X射线荧光光谱（XRF）评估玻璃材料的化学成分，通过差示热分析（DTA）测量热稳定性，并通过紫外-可见光谱法测定透过率。通过扫描电子显微镜（SEM）观察玻璃基板表面和沉积的FTO，通过X射线衍射（XRD）确定样品的非晶态或晶态，并通过四点探针法评估薄层电阻。在wSG基板上沉积的FTO的薄层电阻为7.84±3.11Ω/□，低于沉积在商用钠钙玻璃上的电阻（8.48±3.67Ω/□），这意味着这种材料可以通过光伏效应提高所产生电子的传导性。该工艺可能是一种利用废料生产可用于光伏应用的玻璃基板的替代方法，特别是用于生产生态光伏窗户。
