发光学报, 2012, 33 (2): 201, 网络出版: 2012-02-20   

聚苯胺/ZnO纳米线薄膜材料作为发光层的柔性光电器件及其发光机理

Photo- and Electro-luminescence of PANI/ZnO Nanowire Film for Light-emitting Layer of Flexible Optoelectronic Devices
作者单位
1 上海大学材料科学与工程学院 高分子材料系, 上海200072
2 上海大学材料科学与工程学院 材料研究所, 上海200072
摘要
综合氧化锌纳米线(ZnO NWs)的光学活性与聚苯胺(PANI)的空穴传输特性,设计并制备了一种聚合物/ZnO纳米线电致发光材料,并对其发光特性进行了研究。通过高分子络合软模板法,将有序的单晶ZnO NWs均匀生长在覆有铟锡氧化物(ITO)涂层的柔性聚乙烯对苯二甲酸乙二醇酯(PET)衬底上并嵌入PANI薄膜,获得了电致发光薄膜材料和有机/无机异质结实验器件ITO/(ZnO NWs-PANI)。有机/无机异质结器件电致发光可调,在相对低的开启电压下呈现室温蓝紫外发光,并且ZnO NWs表面覆盖PANI增加了蓝紫外发光的强度和稳定性; 而无PANI的ZnO NWs阵列具有450 nm处的缺陷发射峰,这可能是电子从扩展态锌间隙Zni到价带的跃迁引起的。这些结果表明,基于PANI/ZnO纳米线的复合材料在柔性光电器件方面的应用极具潜力。
Abstract
With the combination of optical activity of ZnO nanowires and the hole-transporting characteristics of polyaniline(PANI), a flexible light-emitting diode based on PANI /ZnO nanowire film was designed and prepared, and luminescence properties were discussed. By our simple polymer-assisted growth method, the ordered single-crystalline ZnO nanowires were uniformly distributed on flexible polyethylene terephthalate(PET)-based indium-tin-oxide-coated substrates.The array of ZnO nanowires grown on PET substrate was successfully embedded in a polyaniline thin film, through which a PANI/ZnO nanowire film and a hybrid device of organic-inorganic hetero-junction of ITO/(ZnO nanowires-PANI) were obtained. The photo- and electroluminescence results show that the hybrid device of organic-inorganic hetero-junction is of tunable electroluminescence and emits ultraviolet at relatively low turn-on voltage; surface capping with PANI on ZnO nanowires enhances ultraviolet emission and reduces defect-related emission at 450 nm of bare ZnO nanowire array, which is attributed to electron transitions from the extended state Zni to the valance band. The results also indicate that PANI/ZnO nanowire film has a great potential for application in flexible optoelectronic devices.

贺英, 潘照东, 张瑶斐, 朱棣, 陈杰, 王均安. 聚苯胺/ZnO纳米线薄膜材料作为发光层的柔性光电器件及其发光机理[J]. 发光学报, 2012, 33(2): 201. HE Ying, PAN Zhao-dong, ZHANG Yao-fei, ZHU Di, CHEN Jie, WANG Jun-an. Photo- and Electro-luminescence of PANI/ZnO Nanowire Film for Light-emitting Layer of Flexible Optoelectronic Devices[J]. Chinese Journal of Luminescence, 2012, 33(2): 201.

本文已被 2 篇论文引用
被引统计数据来源于中国光学期刊网
引用该论文: TXT   |   EndNote

相关论文

加载中...

关于本站 Cookie 的使用提示

中国光学期刊网使用基于 cookie 的技术来更好地为您提供各项服务,点击此处了解我们的隐私策略。 如您需继续使用本网站,请您授权我们使用本地 cookie 来保存部分信息。
全站搜索
您最值得信赖的光电行业旗舰网络服务平台!