Preparation of humidity, abrasion, and dust resistant antireflection coatings for photovoltaic modules via dual precursor modification and hybridization of hollow silica nanospheres
Preparation of humidity, abrasion, and dust resistant antireflection coatings for photovoltaic modules via dual precursor modification and hybridization of hollow silica nanospheres
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通过双前驱体改性和空心二氧化硅纳米球杂化制备光伏组件防潮、耐磨、防尘减反射涂层
DOI：
10.1016/j.solmat.2018.12.032
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发表时间：
2019-04-01
影响因子：
6.9
通讯作者：
Song, Weijie
中科院分区：
文献类型：
--
作者：
Zhang, Jing;Ai, Ling;Song, Weijie
太阳能玻璃上的减反射（AR）涂层用于光伏（PV）模块，通常会遇到恶劣的环境，这要求AR涂层必须阻止水分渗透、划痕损坏和灰尘积聚。尽管化学改性通常有利于增透膜的多功能化，但它可能会导致光学和机械性能的下降。我们证明了中空二氧化硅纳米球的良好控制的双重前体改性/杂化过程是实现稳健的多功能AR涂层的关键。在120 h的超长高加速湿度和温度应力测试持续时间后，双吸收器衍生的AR涂层在300至1200 nm波长处的平均透射率增加了5.08%，并且相对减少小于0.6%，相当于在85 ℃和85%的温度和相对湿度下进行5000 h湿热测试，以及优异的耐磨性和防尘性。通过封装的晶体硅微型组件评估了双玻璃源AR涂层对PV器件的影响，其中相对于裸玻璃封装的微型组件，观察到短路电流和功率转换效率（J（sc）和PCE）平均分别提高了2.45%和3.20%;同时，减反射涂层的抗尘性使其J（sc）和PCE在沉降和除尘试验后分别下降了1.01%和1.15%，而裸玻璃微组件的J（sc）和PCE分别下降了3.45%和4.40%。据信，双前体、潜在的多前体协议将为开发具有各种迷人功能的机械坚固的AR涂层铺平道路，例如防指纹、防污、防雾和防结冰。
Antireflection (AR) coatings on solar glass, used in photovoltaic (PV) modules, generally encounter harsh environments, which demands that AR coatings must hinder moisture penetration, scratch damage, and dust accumulation. Though chemical modification generally benefits the multi-functionalization of AR coatings, it is likely to bring about a degradation of optical and mechanical properties. We demonstrated that a well-controlled dual precursor modification/hybridization process of hollow silica nanospheres was the key to achieve the robust multifunctional AR coatings. The dual precursor-derived AR coatings exhibited an increase of 5.08% in average transmittance at wavelengths from 300 to 1200 nm and a small relative reduction below 0.6% after an ultra-long highly-accelerated humidity and temperature stress test duration of 120 h, equivalent to a 5000 h damp heat test at a temperature and a relative humidity of 85 degrees C and 85%, respectively, as well as the excellent abrasion and dust resistance. The effects of the dual precursor-derived AR coatings on PV devices were evaluated by the encapsulated crystalline silicon mini-modules, where the improvements of 2.45% and 3.20% in the short-circuit current and the power conversion efficiency (J(sc) and PCE) on average, respectively, relative to the bare glass encapsulated mini-modules were observed; meanwhile, the dust resistance of the AR coatings brought about the less degradations of 1.01% and 1.15% in J(sc) and PCE, respectively, after the dust settling and removal tests, while the mini-modules with bare glass were 3.45% and 4.40%. It was believed that the dual-precursor, potentially, multi-precursor protocols would pave the way towards developing mechanically robust AR coatings with various fascinating functionalities, such as anti-fingerprint, anti-soiling, anti-fogging, and anti-icing.