Wavelength conversion film with glass coated Eu chelate for enhanced silicon-photovoltaic cell performance
Wavelength conversion film with glass coated Eu chelate for enhanced silicon-photovoltaic cell performance
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DOI：
10.1016/j.optmat.2009.05.016
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发表时间：
2009-11-01
影响因子：
3.9
通讯作者：
Kamata, Norihiko
中科院分区：
文献类型：
--
作者：
Fukuda, Takeshi;Kato, Sayaka;Kamata, Norihiko
为了提高硅光伏（PV）组件的转换效率，我们研究了与波长转换膜（WCF）的组合，所述波长转换膜由溶胶-凝胶衍生的二氧化硅玻璃封装的Eu螯合物颗粒组成。Eu配合物的光致发光（PL）激发光谱表明，400 nm以下的紫光被有效地转换为613 nm的红光。由于PV电池在红色波长区域比在紫色区域具有更高的灵敏度，因此Eu螯合物是用于WCF的合适材料之一。制备的溶胶-凝胶包覆铕螯合物的直径大于太阳光的波长，因此，随铕螯合物浓度的增加，WCF的透射率降低。与参考模块（玻璃/乙烯乙酸乙烯酯/不含Eu螯合物的WCF/Si-PV电池/伊娃/背膜）相比，通过在Si-PV电池的前侧插入WCF，短路电流（J（SC））增加，并且与参考模块相比，Δ J（SC）的最大增加为1.03 mA/cm（2）。然而，由于各层的折射率不匹配，所制造的模块的最大Δ J（SC）几乎与常规硅光伏电池相同。(C)2009 Elsevier B. V.保留所有权利。
In order to improve the conversion efficiency of a silicon-photovoltaic (PV) module, we investigated the combination with a wavelength conversion film (WCF), which consists of Eu chelate particles encapsulated by the sol-gel derived silica glass. The photoluminescence (PL) excitation spectrum of Eu chelate shows that the violet light below 400 nm is effectively converted to the red emission at 613 nm. Since the PV cell has higher sensitivity at the red wavelength region compared to the violet region, Eu chelate is one of the suitable material for a WCF. The diameter of fabricated sol-gel encapsulated Eu chelate was larger than the wavelength of irradiated sunlight, therefore, the transmittance of a WCF decreased with increasing the concentration of Eu chelate. The short circuit current (J(SC)) was increased by inserting the the WCF on the front side of Si-PV cell compared to the reference module (glass/ethylene vinyl acetate/WCF without Eu chelate/Si-PV cell/EVA/back-film), and the maximum increase of Delta J(SC) was 1.03 mA/cm(2) compared to the reference module. However, the maximum Delta J(SC) of fabricated module was almost same as the conventional Si-PV cell due to the refractive index mismatch of each layers. (C) 2009 Elsevier B.V. All rights reserved.