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有机太阳能电池研究进展
  • ISSN号：0529-6579
  • 期刊名称：《中山大学学报：自然科学版》
  • 时间：0
  • 分类：TM914.4[电气工程—电力电子与电力传动]
  • 作者机构：[1]北京大学物理学院,人工微结构和介观物理国家重点实验室,北京100871
  • 相关基金：国家自然科学基金项目（60677002 10674011 10934001 60907015 10821062）; 国家基础研究计划项目（2007CB307000 2009CB930504）资助
作者： 李炳田[1], 任斌[2], 黄河[2]
关键词： 光伏电池, 电化学沉积, 聚噻吩, 开路电压, Photovoltaic, Electrodeposition, Polythiophene, Open circuit voltage
中文摘要：

以铟锡氧化物（ITO）/聚（3,4-亚乙二氧基噻吩）-聚（苯乙烯磺酸）（PEDOT：PSS）为工作电极,采用电化学沉积法,直接在其上形成聚3-己基噻吩（P3HT）薄膜。其紫外可见吸收光谱的峰值约位于410nm处,吸收边延至610nm处,禁带宽度为2.04eV。测得其最高占有分子轨道（HOMO）能级为-5.21eV,而化学合成P3HT的HOMO能级为-5.02eV,这可能源于电化学合成聚噻吩的规整度比化学合成的要高。原子力显微镜AFM形貌结果表明电化学合成的P3HT中噻吩分子排列紧密,循环伏安扫描表明此P3HT薄膜的电化学性质稳定。采用该电化学合成的聚噻吩与富勒烯衍生物[6,6]-苯基-C61-丁酸甲酯（PCBM）复合而成的光伏电池的开路电压高达0.76V,这主要源于电化学合成聚噻吩HOMO能级的降低,因而揭示了提高光伏电池开路电压的新途径。

英文摘要：

Poly（3-hexylthiophene）（P3HT） thin films were electrochemically deposited directly on indium tin oxide（ITO）/poly（3,4-ethylenedioxythiophene）-poly（styrenesulfonate）（PEDOT：PSS） substrates.Its optical absorption peak is located at about 410 nm and tailing to 610 nm,corresponding to 2.04 eV of bandgap.Its highest occupied molecular orbital（HOMO） energy is-5.21 eV,while the HOMO energy of the chemically synthesized P3HT is-5.02 eV.The lower HOMO energy of the electrodeposited P3HT may be attributed to the enhancement of regularity.The morphology of the P3HT thin film characterized by atomic force microscopy（AFM） indicates that the molecules contact firmly.The cyclic voltammetry results show that its electrochemical property is stable.theauthors prepared photovoltaic cell with the P3HT and [6,6]-phenyl-C61-butyric acid methyl ester（PCBM） as the active layer.Because of the lower HOMO of the electrodeposited P3HT,the open circuit voltage（Voc） of the device is up to 0.76 V,indicating a new way to enhance the Voc of the organic photovoltaic cells.

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期刊信息
  • 《中山大学学报：自然科学版》
  • 北大核心期刊（2011版）
  • 主管单位:国家教育部
  • 主办单位:中山大学
  • 主编：王建华
  • 地址：广州市新港西路135号
  • 邮编：510275
  • 邮箱：xuebaozr@mail.sysn.edu.cn
  • 电话：020-84111990
  • 国际标准刊号：ISSN：0529-6579
  • 国内统一刊号：ISSN：44-1241/N
  • 邮发代号:46-15
  • 获奖情况:
  • 全国优秀高等学校自然科学学报及教育部优秀科技期...,广东省优秀科学技术期刊一等奖,《中文核心期刊要目总览》综合性科技类核心期刊,中国期刊方阵“双效”期刊
  • 国内外数据库收录:
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  • 被引量:18509