首页|n(Bi2O3)/n(SiO2)对Bi2O3-B2O3-SiO2系光伏玻璃背板油墨微观结构和反射率的影响

n(Bi2O3)/n(SiO2)对Bi2O3-B2O3-SiO2系光伏玻璃背板油墨微观结构和反射率的影响

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随着光伏发射极和背面钝化电池双面双玻组件产业的兴起,光伏玻璃背板用光伏油墨的需求量逐年递增.光伏油墨制备成涂层后,其致密程度将直接影响自身的反射率,进而对光伏电池的光电转化效率产生影响.本文通过改变n(Bi2O3)/n(SiO2),探究玻璃熔剂析晶和其对Bi2O3-B2O3-SiO2系玻璃熔剂所制备光伏油墨的影响.采用DSC和Raman对玻璃熔剂的特征行为进行了表征,采用XRD、SEM、色度仪对不同光伏油墨涂层的微观结构和反射率进行了研究,并提出了光伏油墨涂层的光反射增强机制.研究表明,n(Bi2O3)/n(SiO2)的升高会使[BiO3]和[BiO6]基团含量增多,破坏[SiO4]玻璃网络的能力增强,玻璃熔剂的转变温度和析晶峰温度逐渐降低,玻璃熔剂的析晶能力逐渐增大.在短时间内烤制后的玻璃熔剂涂层中会逐渐析出大量的片状Bi2SiO5晶粒,将其制备成光伏油墨涂层后,涂层的反射率会随着n(Bi2O3)/n(SiO2)的升高而逐渐升高.当n(Bi2O3)/n(SiO2)为30∶60时,光伏油墨涂层的反射率在近红外波长范围内可提升到82.66％.这主要是因为油墨涂层中的孔隙和空洞作为异相界面,可促使Bi2SiO5晶粒析出并填充在光伏油墨涂层的孔隙和空洞中,使油墨涂层的致密度提高,从而增强光伏油墨涂层对光线的反射能力.
Effect of n(Bi2O3)/n(SiO2)on Microstructure and Reflectivity of Bi2O3-B2O3-SiO2 System Photovoltaic Glass Backplane Inks
With the rise of passivated emitter and rear cell double-sided glass components industries,the need for photovoltaic ink for photovoltaic glass backsheet is growing annually.After the photovoltaic ink is prepared for the coating,the degree of its density will have a direct impact on the reflectivity of photovoltaic ink coating and conversion efficiency ulteriorly of photovoltaic cell.By changing then(Bi2O3)/n(SiO2),the crystallization of glass flux and its effect on the photovoltaic ink prepared by Bi2O3-B2O3-SiO2 glass flux were investigated.The different characteristics of glass flux were analyzed by using DSC and Raman.The microstructure and reflectance of various photovoltaic ink coating were studied by using XRD and SEM,and the mechanism for the enhancement of light reflection was proposed.The results show that the increase of n(Bi2O3)/n(SiO2)leads to an increase in[BiO3]and[BiO6]ionic groups.Thus,the destruction ability of the[SiO4]glass network is enhanced,and the transition temperature and crystallization peak temperature of glass flux gradually decrease.The crystallization ability of glass flux gradually increases.A large number of flaky Bi2SiO5 crystals are gradually precipitated from photovoltaic ink coating in a short period of time.After preparing them as photovoltaic ink coating,the reflectivity of the coating gradually increases with the elevation of n(Bi2O3)/n(SiO2).With n(Bi2O3)/n(SiO2)of 30∶60,the reflectance of photovoltaic ink coating can be enhanced to 82.66％in the near-infrared wavelength range.This is mainly due to the fact that the pores and cavities in photovoltaic ink coating act as heterogeneous interfaces,prompting the precipitation of Bi2SiO5 crystals and filling them into the pores and cavities of photovoltaic ink coating,resulting in an increase in the densification of photovoltaic ink coating and thus an enhancement of the reflective ability of photovoltaic ink coating to light.

Bi2O3-B2O3-SiO2 system photovoltaic glass backplane inkreflectivityn(Bi2O3)/n(SiO2)microstructurecrystallization

汪伟、赵田贵、孟子豪、刘溧、董伟霞、徐和良、包启富

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景德镇陶瓷大学材料科学与工程学院,景德镇 333403

江苏拜富科技股份有限公司,无锡 214200

Bi2O3-B2O3-SiO2系光伏玻璃背板油墨 反射率 n(Bi2O3)/n(SiO2) 微观结构 析晶

江西省重大自然科学基金项目景德镇市科技厅项目景德镇市科技厅项目

20232ACB20401720212GYZD009-1820224GY008-16

2024

硅酸盐通报
中国硅酸盐学会 中材人工晶体研究院

硅酸盐通报

CSTPCD北大核心
影响因子：0.698
ISSN：1001-1625
年,卷(期)：2024.43(2)
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