Influence of central metal atom in MPc (M = Cu, Zn, Mg, Co) on Raman, FT-IR, absorbance, reflectance, and photoluminescence spectra
Influence of central metal atom in MPc (M = Cu, Zn, Mg, Co) on Raman, FT-IR, absorbance, reflectance, and photoluminescence spectra
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MPc 中中心金属原子（M = Cu、Zn、Mg、Co）对拉曼、FT-IR、吸光度、反射率和光致发光光谱的影响
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发表时间：
2009
期刊：
影响因子：
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通讯作者：
P. Piszczek
中科院分区：
文献类型：
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作者：
W. Bala;M. Wojdyła;M. Rebarz;M. Szybowic;M. Drozdowski;A. Grodzicki;P. Piszczek
本文比较研究了金属酞菁(MPC；M=锌、钴、镁、铜)薄膜的光致发光(PL)、吸收(A)、红外光谱(FT-IR)、拉曼散射(RS)和反射(R)光谱。用准分子束蒸发法在石英和硅衬底上沉积了薄膜。测量在350-1150 nm光谱范围内进行，温度范围为13-320K(PL)和70K-550K(FT-IR，RS)。CoPc和CuPc薄膜在紫外区和近红外区有荧光发射，而CoPc和CuPc薄膜没有可测得的发射。首次给出了在如此宽的光谱范围内测量的MPC光致发光光谱的温度依赖关系。所获得的发射光谱显示了几个跃迁，但其中一些只有在一定的温度范围内才能看到。研究了谱带强度和谱带位置随温度的变化。对FT-IR和拉曼散射光谱也进行了类似的研究。在180K和380K温度下，MPC薄膜中的拉曼模和傅立叶变换红外光谱的积分强度和谱带位置显示出明显的扭折现象。
In this paper we present the comparative study of photoluminescence (PL), absorption (A), FT-IR, Raman scattering (RS) and reflection (R) spectra of metallophthalocyanines (MPc; M = Zn, Co, Mg, Cu) thin layers. Investigated thin films were deposited by the quasi molecular beam evaporation method on the quartz and silicon substrates. The measurements were carried out in the 350-1150 nm spectral region at wide temperature range from 13K to 320K (PL) and 70K to 550K (FT-IR, RS). The thin films of ZnPc and MgPc show PL emission from the violet to near-IR region whereas CoPc and CuPc layers do not show measurable emission. The temperature dependence of MPc photoluminescence spectra measured in such a wide spectral range are presented for the first time. The obtained emission spectra exhibit several transitions but some of them are visible only at certain temperature range. The changes of both, bands intensities and band positions versus temperature have been studied. Similar investigations have been performed for the FT-IR and Raman scattering spectra. Integral intensities and band position of Raman and FT-IR modes in MPc thin layers indicate sharp kinks at 180 K and 380 K. The obtained transmission and reflection spectra of all investigated thin layers have been also compared with mentioned above results.