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首页> 外文期刊>Journal of Electronic Materials >Enhancement of the Optoelectronic Properties of PEDOT: PSS-PbS Nanoparticles Composite Thin Films Through Nanoparticles' Capping Ligand Exchange
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Enhancement of the Optoelectronic Properties of PEDOT: PSS-PbS Nanoparticles Composite Thin Films Through Nanoparticles' Capping Ligand Exchange

机译：提高PEDOT的光电性质：PSS-PBS纳米粒子复合薄膜通过纳米颗粒封装配体交换

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The influence of the capping ligand on nanoparticles' optical and electronic properties is a topic of great interest currently being investigated by several research groups in different countries. In the present study, PbS nanoparticles originally synthesized with oleic acid, myristic acid and hexanoic acid underwent a ligand exchange process to replace the original carboxylic acid for L-cysteine as the capping layer, and were thoroughly characterized by means of transmission electron microscopy and its related techniques, such as energy dispersive x-ray spectroscopy and scanning-transmission electron microscopy, and Fourier transform infrared, Raman and x-ray photoelectron spectroscopy. Afterwards, these PbS nanoparticles were dispersed into a poly(3,4-ethylenedioxythiophene):poly(styrenesulfonic acid) (PEDOT:PSS) matrix to fabricate a composite thin film which displayed the optical absorption properties of the PbS nanoparticles and the electrical transport properties of the PEDOT:PSS matrix, in order to evaluate the impact of the nanoparticles' capping ligand on the optoelectronic properties of the fabricated composite thin films. Composite thin films with PbS nanoparticles showing L-cysteine as the capping layer displayed clear photoresponse and a threefold increment in their conductivities compared to pristine PEDOT:PSS. The properties of PEDOT:PSS, known as a hole transport layer in most organic photovoltaic devices, were enhanced by adding PbS nanoparticles with different capping ligands, producing a promising composite material for optoelectronic applications by proper selection of the nanoparticles' capping layer.
机译：封端配体对纳米颗粒的光学和电子特性的影响是目前在不同国家的几个研究群体调查的极大利益的主题。在本研究中，PBS纳米颗粒最初用油酸，肉豆蔻酸和六烷酸合成了配体交换过程，以替代L-半胱氨酸作为封端层的原始羧酸，并通过透射电子显微镜及其彻底表征。相关技术，如能量分散X射线光谱和扫描透射电子显微镜，以及傅里叶变换红外，拉曼和X射线光电子能谱。然后，将这些PBS纳米颗粒分散到聚（苯乙烯磺酸）：聚（苯乙烯磺酸）（PEDOT：PSS）基质中，以制造展示PBS纳米颗粒的光学吸收性能的复合薄膜和电气传输性能PEDOT：PSS基质，为了评估纳米颗粒覆盖配体对制造复合薄膜的光电性质的影响。与PBS纳米粒子的复合薄膜显示L-半胱氨酸，因为与原始PEDOT相比，它们的电导率下显示出清晰的光响应和三倍的增量。 The properties of PEDOT:PSS, known as a hole transport layer in most organic photovoltaic devices, were enhanced by adding PbS nanoparticles with different capping ligands, producing a promising composite material for optoelectronic applications by proper selection of the nanoparticles' capping layer.

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