Please use this identifier to cite or link to this item: http://hdl.handle.net/11455/16975
標題: 掺雜2CdI4-2 、4I-1 、6I-1 之porphyrin晶體之反射偏極光譜及導電性之研究
Studies of reflectivity and transport properties of crystals of porphyrin doped with2CdI4-2 、4I-1 、6I-1
作者: 林維新
Lin, Wei-Xin
關鍵字: porphyrin
反射光譜
reflectivity
transport
導電性
出版社: 物理學系所
引用: [1]陳錦地,Chemistry58,447(2000) [2]L. L. L, C. J. Wang, W. H. Chen, K. J. Lin, Angew. Chem. 42, 1505 (2003) [3]李陸玲,孔洞超分子化合物:普林管之合成(國立中興大學化學系所,2001),p10 [4] K. Kilian, K. Pyrzynska, Talanta 60, 669-678(2003) [5] H. L. Liu and D. B. Tanner, Phys. Rev. B 53, 10557 ~10568(1996) [6] EWWARD D.PALIK Handbook of Optical Constants of Solids, Naval Research Laboratory [7] 丁裕生, 摻雜2CdI4-2、4I-、6I-之porphyrin溶液及晶體之吸收光譜、光學異向性、電性之研究(國立中興大學物理所) [8] 顏士勛, 摻雜2CdI4-2、4I-、6I-之porphyrin晶體之反射光譜、光學異向性、photoluminescence(國立中興大學物理所) [9] Journal of Alloys and Compounds 380, 380-388 (2004) [10] Hongliang Yang1, Xinqiang Wang2, J. Opt. A: Pure Appl. Opt. 7, 510-513 (2005) [11] Alexander D. Schwab, Deirdre E. Smith, NANO LETTERS 2004 Vol.4,No.7 1261-1265 [12] T. Miyahara, H. Nakatsuji, J. Chem. Phys., 117, 24 (2002)
摘要: 本論文中我們研究掺雜2CdI4-2 、4I-1 、6I-1 之porphyrin晶體:H2TEPyP-2CdI4-2、H2TEPyP-4I-1 、H2TEPyP-6I-1 ,從波長400nm~1050nm的反射偏極光譜,和傳輸特性。由光譜可以觀察到三種樣品具有porphyrin的指紋(fingerprint):B band (400nm~500nm)與Q band (500nm~700nm)。 我們改變電場方向,觀察反射光譜的變化,發現當樣品平躺時,只有H2TEPyP-2CdI4-2在B band範圍具有方向性,但在700nm~1050nm範圍,三種樣品卻都具方向性。然而當樣品直立時,則全部都無方向性。 最後我們對樣品作四點量測,每樣品各得到一個臨界溫度,當溫度高於臨界溫度時,導電率會隨溫度上升而急速上升,呈現出兩種不同的物理特性,85K與325K的導電率相差10~1000倍。
This research studies the crystals of porphyrin doped with 2CdI4-2, 4I-, and 6I- by measuring the polarized reflection spectra (400nm~1050nm) and temperature dependent transport properties. The spectra of the three samples all reveal the fingerprints of porphyrin: B band (400nm~500nm) and Q band (500nm~700nm). We observe changes in the reflection spectra, when the direction of electric field of the incident light is changed. When the samples lie down, only H2TEPyP-2CdI4-2 shows isotropic B band; however, in the range from 700nm to 1050nm, all three samples have isotropy. On the contrary, when standing, all samples show anisotropy. Resistivity measurements were conducted by the four-wire method. At temperatures higher than the critical temperature, the conductivity rises drastically with rising temperature. The conductivity increases by 10~1000 times as the temperature rises from 85K to 325K.
URI: http://hdl.handle.net/11455/16975
其他識別: U0005-2607200616343800
文章連結: http://www.airitilibrary.com/Publication/alDetailedMesh1?DocID=U0005-2607200616343800
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