真空共蒸发沉积制备酞菁酮—酞菁铅复合膜及性能研究

本通过真空共蒸发制备了酞菁铜-酞菁铅复合膜。光电子谱测试发现真空共蒸发制备的复合膜中同时具有铜和铅的成分，相对含量与源中酞菁铜与酞菁铅的含量有关。光吸收谱分析表明复合膜的吸收带（Q带）明显发生宽化，其波长覆盖范围扩展到600-1200nm。进一步分析表明复合膜的吸收谱并不是酞菁铜和酞菁铅吸收谱的简单叠加，尤其是在近红外波段复合膜的吸收有所加强，吸收边有明显的红移现象，本对这一现象进行了简单的描述。     

n-ZnO/p-PbPc复合多层膜光吸收性能研究

用溶胶-凝胶(sol-gel)法和真空热蒸发沉积制备了氧化锌/酞菁铅交替生长复合多层膜,并对复合膜的光吸收性能进行了研究.实验发现,复合膜的紫外-可见吸收谱中,酞菁铅的Q带吸收峰同时具有明显的蓝移和红移引起的新峰出现,说明氧化锌和金属酞菁之间存在很强的相互作用.氧化锌和酞菁铅分子间存在两种效应:PbPc分子被ZnO包裹产生的量子约束效应导致的吸收峰蓝移,以及和n型导电的ZnO向p型导电的PbPc:分子的电荷转移产生的红移.     

M-Pc/ZnO复合膜的光电性能研究

采用射频磁控溅射法和真空热蒸发沉积法在FTO衬底上制备了金属酞菁/氧化锌复合膜(M-Pc/ZnO),并对复合膜的光吸收和光电性能进行了研究.实验发现,复合膜的紫外-可见光吸收谱中,金属酞菁的Q带吸收峰明显红移并且透过率有所变化,说明氧化锌和金属酞菁之间存在很强的相互作用.Ag/M-Pc/ZnO/Fro结构在1000 W光照下具有明显的光伏效应,开路电压(Voc)约为0.7V,短路电流(Isc)为2.6×10-5A左右.     

真空共沉积法制备酞菁铅与酞菁氧钒复合膜的研究

酞菁类化合物由于自身的各种特性在众多领域得到了广泛的应用，成为功能材料研究领域中的热点之一。在本文中，我们主要研究了真空没积法制备的两种金属酞菁类材料PbPc与VOPc的单成分膜和复合膜的性质，并对其进行了紫外-可见吸收光谱和X光电子能谱的测试，发现两者之间的复合并不是简单的叠加，两种材料分子之间发生了相互作用。     

盐酸蒸气处理对酞菁氧钛薄膜的影响

用HC1蒸气对真空蒸发沉积的酞菁氧钛薄膜进行了处理 ,并用UV Vis吸收谱、X射线光电子能谱 (XPS)和X射线衍射 (XRD)进行了分析。吸收谱结果表明HC1与酞菁氧钛蒸气作用后产生一个新的吸收峰 ,峰值位于 82 0nm附近。此峰的出现使得酞菁氧钛光吸收带 (Q带 )加宽进入红外波段。光电子谱分析表明酞菁氧钛薄膜的成分发生了变化 ,其中Cl和O的含量随HC1蒸气处理时间的增加而增加 ,而N和Ti的含量随HC1蒸气处理时间的增加而减小 ,说明HC1蒸气可与真空蒸发沉积的酞菁氧钛薄膜发生作用。XRD测试结果表明 ,经HC1蒸气处理后的酞菁氧钛薄膜的衍射谱中出现了若干新的衍射峰 ,表明酞菁氧钛分子的排列结构也发生了变化     

盐酸蒸气处理对酞菁氧钛薄膜的影响

用HCl蒸气对真空蒸发沉积的酞菁氧钛薄膜进行了处理，并用UV-Vis吸收谱、X射线光电子能谱（XPS）和X射线衍射（XRD）进行了分析，吸收谱结果表明HCl与酞菁氧钛蒸气作用后产生一个新的吸收峰，峰值位于820nm附近，此峰的出现使得酞菁氧钛光吸收带（Q带）加宽进入红外波段，光电子谱分析表明酞菁氧钛薄膜的成分发生了变化，其中Cl和O的含量随HCl蒸气处理的时间的增加而增加，而N和Ti的含量随HCl蒸气处理时间的增加而减小，说明HCl蒸气可与真空蒸发沉积的酞菁氧钛薄膜发生作用。XRD测试结果表明，经HCl蒸气处理后的酞菁氧钛薄膜的衍射谱中出现了若干新的衍射峰，表明酞菁氧钛分子的排列结构也发生了变化。     

真空共沉积法制备酞菁铅与酞菁氧钒复合膜的研究

酞菁类化合物由于自身的各种特性在众多领域得到了广泛的应用 ,成为功能材料研究领域中的热点之一。在本文中 ,我们主要研究了真空沉积法制备的两种金属酞菁类材料PbPc与VOPc的单成分膜和复合膜的性质 ,并对其进行了紫外 可见吸收光谱和X光电子能谱的测试 ,发现两者之间的复合并不是简单的叠加 ,两种材料分子之间发生了相互作用     

酞菁铜薄膜的真空热蒸发制备及其性能

用真空热蒸发法在玻璃基板上制得酞菁铜薄膜。用原子力显微镜、紫外可见分光光度计及红外光谱仪等分析了酞菁铜薄膜的结构特征，并对薄膜的沉积机理进行了探讨。通过与Ｌ－Ｂ法的比较，发现用真空热蒸发法制备的酞菁铜薄膜结构、性能更佳。     

酞菁铜薄膜的真空热蒸发制备及其性能

用真空热蒸发法在玻璃基板上制得酞菁铜(CuPc)薄膜。用原子力显微镜、紫外可见光分光光度计及红外光谱仪等分析了酞菁铜薄膜的结构特征,并对薄膜的沉积机理进行了探讨。通过与L-B(Langmuir-Blodgett)法的比较,发现用真空热蒸发法制备的酞菁铜薄膜结构、性能更佳。     

α(β)-四-苯氧基金属酞菁的合成、表征和光谱性质

以3-硝基邻苯二腈和4-硝基邻苯二腈为原料分别合成了1,8,15,22-四-苯氧基酞菁铜(镍)和2,9,16,23-四-苯氧基酞菁铜(镍),通过IR和UV-Vis光谱进行了表征,并讨论了取代基的取代位置和中心离子对酞菁Q带最大吸收波长的影响。     

Purification and characterization of phthalocyanines

The technical details of a simple train sublimation (carrier gas) system for purification of organic materials are given and the refining procedure is described. A study of the effects of purification on metal free phthalocyanine (H₂Pc), magnesium phthalocyanine (MgPc), copper phthalocyanine (CuPc), vanadyl phthalocyanine (VOPc), zinc phthalocyanine (ZnPc) and lead phthalocyanine (PbPc) was carried out by means of optical absorption, X-ray diffraction, electron paramagnetic resonance, sublimation behaviour and photovoltaic data. It was found that train sublimation improves the quality of the pigments considerably. Spectroscopic results indicate the presence of a second phase in the purified MgPc.     

The influence of molecular structure modification on the photoluminescence and optical absorption of thin copper phthalocyanine films in the near-IR range

We have studied the luminescence and optical absorption of thin films of copper phthalocyanine (CuPc) with a modified molecular structure of the peripheral fragments. The coefficient of absorption in the near-IR and visible range (absorption by defects) and the photoluminescence spectra exhibit correlated changes depending on the modification of the CuPc structure.     

One-dimensional quantum transport in lead phthalocyanine nanostructures

A model of the electron structure of a nanoobject comprising a stack of lead phthalocyanine (PbPc) molecules with stacking faults is proposed. The results of the molecular orbital (MO) calculation indicate that a 0.6e charge is transferred from Pb atom to the Pc macrocycle ring and show that the nanostructure can be considered as a metal-filled nanotube. The proposed model provides for the first time a quantitative interpretation of the electric switching effect previously observed in PbPc films.     

n型苝/p型无金属酞菁异质复合多层膜的紫外-可见吸收谱研究

利用真空蒸发技术生长了层厚为纳米数量级的n型导电系衍生物 (全氟取代酰亚胺 ) /p型导电无金属酞菁异质复合多层膜 ,并测试了样品的紫外 -可见吸收光谱。UV -Vis吸收谱实验结果表明 ,对应酞菁Q带吸收的主峰消失 ,次峰发生蓝移 ;全氟取代酰亚胺的吸收峰也发生蓝移 ,吸收带宽度扩展。结果表明 ,复合多层结构中与酞菁之间的电荷转移及纳米层厚导致的量子尺寸效应使分子中电子跃迁发生变化 ,导致吸收谱改变     

Electronic absorption band broadening and surface roughening of phthalocyanine double layers by saturated solvent vapor treatment

Variations in the electronic absorption (EA) and surface morphology of three types of phthalocyanine (Pc) thin film systems, i.e. copper phthalocyanine (CuPc) single layer, zinc phthalocyanine (ZnPc) single layer, and ZnPc on CuPc (CuPc/ZnPc) double layer film, treated with saturated acetone vapor were investigated. For the treated CuPc single layer film, the surface roughness slightly increased and bundles of nanorods were formed, while the EA varied little. In contrast, for the ZnPc single layer film, the relatively high solubility of ZnPc led to a considerable shift in the absorption bands as well as a large increase in the surface roughness and formation of long and wide nano-beams, indicating a part of the ZnPc molecules dissolved in acetone, which altered their molecular stacking. For the CuPc/ZnPc film, the saturated acetone vapor treatment resulted in morphological changes in mainly the upper ZnPc layer due to the significantly low solubility of the underlying CuPc layer. The treatment also broadened the EA band, which involved a combination of unchanged CuPc and changed ZnPc absorption.     

Photoconductivity in thin films of phthalocyanine

The photocurrent and electrolyte electromodulation (EEM) spectra of thin films of metal-free phthalocyanine (H₂Pc) and of copper phthalocyanine (CuPc) were investigated. The modulation spectra yielded three distinct features around 1·61, 2·30 and 2·93 eV for H₂Pc and around 1·63, 2·04 and 3·20 eV for CuPc. The spectral dependence maxima of photoconductivity correspond to the modulation spectra. These features are interpreted to indicate transitions at critical points, i.e. the existence of transitions between three valence bands, since Pc’s are p-type, and the lowest conduction band in Pc’s.     

Lead phthalocyanine incorporated in sol and gel

Lead phthalocyanine (PbPc) was first successfully doped in organic-inorganic matrix by choosing proper alkoxy-silane containing amino-group by sol-gel processing. The characteristics of PbPc in sol and gel were studied using optical absorption spectroscopy. The results show that the presence of PbPc monomer in the sol and gel is strongly controlled by the pH value of sol, and the action of amino-group is an important factor for PbPc monomer able to exist in gel.     

Preparation and characterization of poly (arylene ether nitrile)/copper phthalocyanine composites via sintering treatment

In this work, copper phthalocyanine (CuPc) polymers of excellent electrical conductivity were successfully prepared via a high temperature sintering procedure, the chemical structures and morphology of obtained CuPc polymers were characterized by FTIR and SEM, respectively. Thereafter, CuPc/polyarylene nitrile ethers (PEN) composite films were prepared via solution-casting method. The obtained films show excellent thermal, mechanical and dielectric properties due to the good dispersion and compatibility of conductive CuPc polymers in PEN matrix, which was confirmed by the SEM characterization.     

Optical characterization of electron beam evaporated chloroindium phthalocyanine thin films

In present study, the optical properties of chloroindium phthalocyanine (ClInPc) thin films prepared by electron beam evaporation have been investigated. The optical characteristics of the prepared thin films have been determined using spectrophotometric measurements of the absorbance, transmittance and reflectance at normal incidence in the spectral range 300–1,100 nm. Surface morphology of thin films is studied using field emission scanning electron microscopy. The absorption spectra recorded in UV-Visible region for the deposited films show two well defined intense absorption bands of phthalocyanine molecule; namely the Q-band and the Soret (B-band). The analysis of the spectral behavior of the absorption coefficient in the intrinsic absorption region have been performed to determine the optical band gap energy and type of the electronic transition, which reveals the probability of direct and indirect transitions. Moreover, by studying the absorption coefficient spectra just below the fundamental absorption edge, the width of band tails of localized states (Urbach energy), steepness parameter and width of the defect states have been evaluated. The obtained results of this novel grown ClInPc thin films support the desirable feature for the optoelectronic devices.