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Improved performance of P3HT：PCBM solar cells by both anode modification and short-wavelength energy utilization using Tb（aca）3phen

ISSN号：1674-1056
期刊名称：《中国物理B：英文版》
时间：0
分类：TN405[电子电信—微电子学与固体电子学] TM914.4[电气工程—电力电子与电力传动]
作者机构：[1]Key Laboratory of Luminescence and Optical Information of the Ministry of Education, Beijing Jiaotong University, Beijing 100044, China
相关基金：Project supported by the National Basic Research Program of China （Grant Nos. 2011CB932700 and 2011CB932703）, the National Outstanding Youth Science Foundation of China （Grant No. 60825407）, the National Natural Science Foundation of China （Grant Nos. 61335006, 61378073, 60877025, 61077044, and 91123025）, the Beijing Natural Science Foundation, China （Grant No. 4132031）, and the Fundamental Research Funds for the Central Universities, China （Grant No. 2012YJS116）.

作者：卓祖亮[1], 王永生[1], 何大伟[1], 富鸣[1]

关键词：太阳能电池, 能量利用率, ACA, 短波长, 阳极, 修饰, 铽, 三元共混物, P3HT：PCBM, anode modification, polymer solar cells

中文摘要：

The performance of P3HT:PCBM solar cells was improved by anode modification using spin-coated Tb(aca)3phen ultrathin films. The modification of the Tb(aca)3phen ultrathin film between the indium tin oxide(ITO) anode and the PEDOT:PSS layer resulted in a maximum power conversion efficiency(PCE) of 2.99% compared to 2.66% for the reference device, which was due to the increase in the short-circuit current density(Jsc). The PCE improvement could be attributed to the short-wavelength energy utilization and the optimized morphology of the active layers. Tb(aca)3phen with its strong down-conversion luminescence properties is suitable for the P3HT:PCBM blend active layer, and the absorption region of the ternary blend films is extended into the near ultraviolet region. Furthermore, the crystallization and the surface morphology of P3HT:PCBM films were improved with the Tb(aca)3phen ultrathin film. The ultraviolent–visible absorption spectra,atomic force microscope(AFM), and X-ray diffraction(XRD) of the films were investigated. Both anode modification and short-wavelength energy utilization using Tb(aca)3phen in P3HT:PCBM solar cells led to about a 12% PCE increase.

英文摘要：

The performance of P3HT：PCBM solar cells was improved by anode modification using spin-coated Tb（aca）3phen ultrathin films. The modification of the Tb（aca）3phen ultrathin film between the indium tin oxide （ITO） anode and the PEDOT：PSS layer resulted in a maximum power conversion efficiency （PCE） of 2.99% compared to 2.66% for the reference device, which was due to the increase in the short-circuit current density （Jsc）. The PCE improvement could be attributed to the short-wavelength energy utilization and the optimized morphology of the active layers. Tb（aca）3phen with its strong down-conversion luminescence properties is suitable for the P3HT：PCBM blend active layer, and the absorption region of the ternary blend films is extended into the near ultraviolet region. Furthermore, the crystallization and the surface morphol- ogy of P3HT：PCBM films were improved with the Tb（aca）3phen ultrathin film. The ultraviolent-visible absorption spectra, atomic force microscope （AFM）, and X-ray diffraction （XRD） of the films were investigated. Both anode modification and short-wavelength energy utilization using Tb（aca）3phen in P3HT：PCBM solar cells led to about a 12% PCE increase.

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