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We report the enhanced performance of organic solar cells(OSCs) based on regioregular poly(3-hexylthiophene)(P3HT) and methanofullerene [6,6]-phenyl C61-butyric acid methyl ester(PCBM) blend by using dihydroxybenzene as additive in the active layer.The effect of the content of the additives on electrical characteristics of the device is studied.The device with 0.2 wt% dihydroxybenzene additive achieves the best power conversion efficiency(PCE) of 4.58% with Jsc of 12.5 mA/cm2,Voc of 0.65 V,and FF of 66.6% under simulated solar illumination of AM 1.5G(100 mW/cm2),compared with the control device with PCE of 3.39%(35% improvement compared with the control device).The XRD measurement reveals that the addition of additives induces the crystallization of P3HT and establishes good inter-network to increase the contact area of donor and acceptor,and then helps charge to be effectively transferred to the electrode to reduce the chance of recombination.All evidences indicate that the dihydroxybenzene is likely to be a promising new type additive that can enhance the performance of organic bulk heterojunction solar cells. 相似文献
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强夯法有效加固深度的确定方法与判定标准 总被引:12,自引:0,他引:12
本文统计收集了国内外强夯法地基有效加固深度的9类40多种确定方法及10多种判定方法和标准,对有效加固深度——这一强夯技术理论中重要而未得到根本解决的问题进行了分析。从工程实用角度澄清了有效加固深度的定义及与影响深度的区别,建议规范明确界定有效加固深度的深刻内涵和量化指标,避免由于概念分歧在合同中产生纠纷。提出并推荐了综合确定有效加固深度的原则、方法和判定标准,对工程应用具有一定的参考价值。 相似文献
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