Optical properties of melamine based materials

被引：4

作者：

Kalyanaraman, S. ^{[1
]}

Vijayalakshmi, S. ^{[1
]}

Kanagavalli, M. ^{[1
]}

Kalaselvi, M. ^{[1
]}

Maheswari, S. ^{[1
]}

Kirthika, P. ^{[1
]}

机构：

[1] Sri Paramakalyani Coll, PG & Res Dept Phys, Alwarkurichi 627412, India

来源：

OPTIK | 2014年 / 125卷 / 22期

关键词：

Melamine salts; Optical properties; Insulator; Dielectrics; CO-CRYSTAL; COCRYSTALS; DIHYDRATE;

D O I：

10.1016/j.ijleo.2014.08.118

中图分类号：

O43 [光学];

学科分类号：

070207 ; 0803 ;

摘要：

The melamine based crystalline materials are synthesized. To determine the optical properties the transmittance and reflectance spectra are recorded. The absorption coefficient of the materials is calculated using the recorded transmittance values. From the absorption coefficient values the insulating behavior of all our studied materials is identified. In addition the direct bandgap transition nature of the materials is recognized from the absorption coefficient value. Tauc relation is used to determine the bandgap energy. The bandgap energy values suggest the dielectric nature of the materials and interpretation is given for high dielectric constant values. (C) 2014 Elsevier GmbH. All rights reserved.

引用

页码：6634 / 6636

页数：3

共 16 条

[1] Optical band gap and optical constants in amorphous Se96-xTe4Agx thin films [J].

Al-Ghamdi, AA .

VACUUM, 2006, 80 (05) :400-405

[2] Optical absorption of insulators and the electron-hole interaction: An ab initio calculation [J].

Benedict, LX ;

Shirley, EL ;

Bohn, RB .

PHYSICAL REVIEW LETTERS, 1998, 80 (20) :4514-4517

[3] Crystal and co-crystal: a second opinion [J].

Dunitz, JD .

CRYSTENGCOMM, 2003, 5 :506-506

[4] SOME PROPERTIES OF SB2TE3-XSEX FOR NONVOLATILE MEMORY BASED ON PHASE-TRANSITION [J].

GOSAIN, DP ;

SHIMIZU, T ;

OHMURA, M ;

SUZUKI, M ;

BANDO, T ;

OKANO, S .

JOURNAL OF MATERIALS SCIENCE, 1991, 26 (12) :3271-3274

[5] MATERIALS DEVELOPMENTS FOR WRITE-ONCE AND ERASABLE PHASE-CHANGE OPTICAL-RECORDING [J].

GRAVESTEIJN, DJ .

APPLIED OPTICS, 1988, 27 (04) :736-738

[6] Bis(melaminium) sulfate dihydrate [J].

Janczak, J ;

Perpétuo, GJ .

ACTA CRYSTALLOGRAPHICA SECTION C-CRYSTAL STRUCTURE COMMUNICATIONS, 2001, 57 (57) :1431-1433

[7] Supramolecular architecture of bis(melaminium) L-tartrate 2.5-hydrate [J].

Lakshmi, KU ;

Thamotharan, S ;

Ramamurthi, K ;

Varghese, B .

ACTA CRYSTALLOGRAPHICA SECTION E-STRUCTURE REPORTS ONLINE, 2006, 62 :O455-O457

[8] Crystal engineering of melamine-imide complexes; Tuning the stoichiometry by steric hindrance of the imide carbonyl groups [J].

Lange, RFM ;

Beijer, FH ;

Sijbesma, RP ;

Hooft, RWW ;

Kooijman, H ;

Spek, AL ;

Kroon, J ;

Meijer, EW .

ANGEWANDTE CHEMIE-INTERNATIONAL EDITION IN ENGLISH, 1997, 36 (09) :969-971

[9] Melaminium benzoate dihydrate [J].

Perpétuo, GJ ;

Janczak, J .

ACTA CRYSTALLOGRAPHICA SECTION E-CRYSTALLOGRAPHIC COMMUNICATIONS, 2005, 61 :O287-O289

[10]

Sharoff N., 1991, OPT MEM TECH APPL

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