以4,4′-二环己基甲烷二异氰酸酯(HMDI)为硬段、端羟基聚丁二烯(HTPB)为软段、丙烯酸羟乙酯(HEA)为封端剂,按HMDI/HTPB/HEA物质的量比为2/1/1进行预聚及封端二步反应,制备出聚氨酯丙烯酸酯预聚体(PUA);再以PUA为基础树脂,与不同比例的紫外吸收剂(RUVA-93)和铕配合物[Eu(LA)3Phen]共混,经紫外光固化得到系列UV-PUA-Y复合涂层,并将其应用于硅基太阳能电池。利用FT-IR、1H-NMR、SEM等多种表征方法,对复合涂层的结构与性能进行分析。结果表明,经共混体系优化后,UV-PUA、Eu(LA)3Phen、RUVA-93含量分别为98.47%、1.50%、0.03%的UV-PUA-Y3涂层表现出最佳综合性能,采用该涂层的硅基太阳能电池短路电流提高了7.14%,这为有机涂层提升光伏太阳能电池转换效率提供了新突破。
A vinyl-terminated polyurethane acrylate prepolymer (PUA) was successfully prepared by using 4,4′-dicyclohexylmethane diisocyanate (HMDI) as the hard segment and hydroxyl-terminated polybutadiene (HTPB) as the soft segment,with hydroxyethyl acrylate (HEA) as the sealing agent,through two-step reaction of prepolymerization and endcapping reaction at the ratio of HMDI/HTPB/HEA=2/1/1.A series of UV-PUA-Y composite coatings were obtained by blending PUA based resin with different ratios of 2-(2-hydroxy-5-(2-(methacryloyloxy) ethyl) phenyl)-2H benzotriazole (RUVA-93) and rare earth europium complex (Eu(LA)3Phen),followed by UV curing.These coatings were then applied to silicon-based solar cells.The structure and properties of the coatings were characterized by using FT-IR,1H-NMR,SEM etc.The results showed that,after optimizing the blend system,the UV-PUA-Y3 coating with a content of 98.47% UV-PUA,1.50% Eu(LA)3Phen,and 0.03% RUVA-93 exhibited the best comprehensive performance.The short-circuit current of silicon-based solar cells using this coating increased by 7.14%,providing a new breakthrough for improving the conversion efficiency of photovoltaic solar cells with organic coatings.
[1] Hayat M B,Ali D,Monyake K C,et al.Solar energy—a look into power generation,challenges,and a solar-powered future[J].International Journal of Energy Research,2019,43(3):1049-1067.
[2] Machín A,Márquez F.Advancements in photovoltaic cell materials:silicon,organic,and perovskite solar cells[J].Materials,2024,17(5):1165.
[3] Danos L,Fang L,Dzurňak B,et al.Photosensitised silicon solar cells:progress and challenges[J].Chemical Communications,2025(67):12407-12606.
[4] Szindler M M,Szindler M,Lukaszkowicz K,et al.The use of ZnO quantum dots to improve the electrical properties of silicon solar cells[J].Materials,2025,18(4):861.
[5] Li J,Zhang S,Luo H,et al.Efficient near ultraviolet to near infrared downconversion photoluminescence of La2GeO5∶Bi3+,Nd3+ phosphor for silicon-based solar cells[J].Optical Materials,2018,85:523-530.
[6] Klampaftis E,Ross D,McIntosh K R,et al.Enhancing the performance of solar cells via luminescent down-shifting of the incident spectrum:a review[J].Solar Energy Materials and Solar Cells,2009,93(8):1182-1194.
[7] Zhou X,Shen J,Wang Y,et al.An efficient dual-mode solar spectral modification for c-Si solar cells in Tm3+/Yb3+ codoped tellurite glasses[J].Journal of the American Ceramic Society,2016,99(7):2300-2305.
[8] 刘芸彤.端羟基聚丁二烯基聚氨酯弹性体微观结构与动态力学性能研究[D].北京:北京化工大学,2020.
[9] Li J,Ning Z,Yang W,et al.Hydroxyl-terminated polybutadiene-based polyurethane with self-healing and reprocessing capabilities[J].ACS Omega,2022,7(12):10156-10166.
[10] Tao Z,Yu C,Xue S,et al.Facile fabrication of transparent cellulose-based film with water and UV resistance properties for potential agriculture application[J].Fibers and Polymers,2024,25(3):765-774.
[11] Ankur K,Pradip J,Narayan V A,et al.Benzotriazole UV stabilizers (BUVs) as an emerging contaminant of concern:a review[J].Environmental Science and Pollution Research,2023,30(58):121370-121392.
[12] Li C,Ma W,Ren X.Synthesis and application of benzotriazole UV absorbers to improve the UV resistance of polyester fabrics[J].Fibers and Polymers,2019,20(11):2289-2296.
[13] Huang G,Yao C,Huang M,et al.Colorless,transparent,and high-performance polyurethane with intrinsic ultraviolet resistance and its Anti-UV mechanism[J].ACS Applied Materials & Interfaces,2023,15(14):18300-18310.
[14] Chang W,Li L,Dou M,et al.Dual-mode downconversion luminescence with broad near-ultraviolet and blue light excitation in Tm3+/Yb3+ codoped oxy-fluoride glasses for c-Si solar cells[J].Materials Research Bulletin,2019,112:109-114.
[15] Frias A R,Cardoso M A,Bastos A R N,et al.Transparent luminescent solar concentrators using Ln3+-based ionosilicas towards photovoltaic windows[J].Energies,2019,12(3):451.
[16] Ho W J,Liu J J,Ke B X.Characterization of luminescent down-shifting spectral conversion effects on silicon solar cells with various combinations of Eu-doped phosphors[J].Materials,2022,15(2):452.
[17] Xu M,Zhang Z,Tao J,et al.Fabrication of POE/POE-g-PHEMA/EuFT light conversion films for photovoltaic modules[J].Journal of Applied Polymer Science,2024,141(43):e56142-e56142.
[18] Yang D,Liang H,Liu Y,et al.A large-area luminescent downshifting layer containing an Eu3+ complex for crystalline silicon solar cells[J].Dalton Transactions,2020,49(15):4725-4731.
[19] Zhang Y J,Liu J,Li Z,et al.Preparation and application of the novel UV-curable polyurethane acrylate coatings with down-shifting luminescence[J].Progress in Organic Coatings,2025,207:109428.
[20] Dong L,Liu X D,Xiong Z R,et al.Preparation and characterization of UV-absorbing PVDF membranes via pre-irradiation induced graft polymerization[J].Chinese Journal of Polymer Science,2019,37(5):493-499.
[21] 周燊,李子骞,淼姚.聚丁二烯基柔性聚氨酯丙烯酸酯的合成及性能研究[J].涂料工业,2024,54(11):15-22.
基金资助
安徽省高校协同创新项目(GXXT-2019-017)
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