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A novel series of Ge-Te-PbI2 chalcogenide glasses is prepared by traditional melt-quenching method, and the glass-forming region is determined. X-ray diffraction, differential thermal analysis, visible/near-infrared absorption spectroscopy and infrared transmission spectra are adopted to analyze the composition, the structure, and the performance of the Te-based glasses system with an addition of PbI2. The Tauc equation is used to calculate the direct and the indirect optical band gaps, based on the metallization criterion and the band gap energy theory, the relationship between optical band gap and composition is investigated. The results show that with the addition of PbI2, the glasses-forming ability and the thermal stability are improved, Also, the density and the refractive index of glass sample both increase, the short-wavelength edges shift to ward a longer wavelength, the band gap decreases and the infrared cut-off wavelength of glass is 25 m which keeps almost unchanged. The series of glasses can be adopted to fabricate the far-IR optical wave-guide devices.
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Keywords:
- Te-based glasses /
- PbI2 /
- optical band gap /
- infrared spectrum
[1] Ford E B, Seager S, Turner E L 2001 Nature 412 885
[2] Fridlund C V M, Capaccioni F 2002 Advances in Space Research 30 2135
[3] Zhang X H, Bureau B, Lucas P, Boussard-Pledel C, Lucas J 2008 Chem. Eur. J. 14 432
[4] Danto S, Houizot P, Boussard-Pledel C, Zhang X H, Smektala F, Lucas J 2006 Adv. Funct. Mater. 16 1847
[5] Nie Q H, Wang G X, Wang X S, Dai S X, Deng S W, Xu T F, Shen X 2010 Opt. Commun. 283 4004
[6] Saheb P Z, Asokan S, Gowda K A 2003 J. Opt. and Adv. Mater. 5 215
[7] Wilhelm A A, Boussard-Plédel C, Coulombier Q, Lucas J, Bureau B, Lucas P 2007 Adv. Mater. 19 3796
[8] Portier J H 1989 J. Non-cryst. Solids 112 15
[9] Arif M, Blinov L. N 2004 Glass Phys. Chem. 30 337
[10] Wang G X, Nie Q H, Wang X S, Dai S X, Xu T F, Shen X, Zhang X H 2010 Physic B: Condensed Matter 405 4424
[11] Nie Q H, Wang G X, Wang X S, Xu T F, Dai S X, Shen X 2010 Acta Phys. Sin. 59 414 (in Chinese) [聂秋华、王国祥、王训四、徐铁峰、戴世勋、沈 祥 2010 物理学报 59 414]
[12] Yang Z, Tang G, Luo L, Chen W 2007 J. Am. Ceram. Soc. 90 667
[13] Cramer C, Grimsditch M, Saboungi M L 1999 J. Phys. Chem. B 103 4018
[14] Ishikawa M, Sekine M, Usuki T, Nasu T 2010 J. Phys. Soc. Japan 79 137
[15] Wang J S, Vogel E M, Snitzer E 1994 Opt. Mater. 3 187
[16] Duffy J A 1986 J. Solid State Chem. 62 145
[17] Dimitrov V, Komatsu T 1999 J. Ceram. Soc. Jpn. 107 1012
[18] Tauc J 1974 Amorphous and Liquid Semiconductor (New York: Plenium Press) p171
[19] Ye C, Ning Z Y, Cheng S H ,Wang X Y 2002 Acta Phys. Sin. 51 2640 (in Chinese) [叶 超、宁兆元、程珊华、王响英 2002 物理学报 51 2640]
[20] Pauling L 1992 J. Chem. Educ. 69 519
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[1] Ford E B, Seager S, Turner E L 2001 Nature 412 885
[2] Fridlund C V M, Capaccioni F 2002 Advances in Space Research 30 2135
[3] Zhang X H, Bureau B, Lucas P, Boussard-Pledel C, Lucas J 2008 Chem. Eur. J. 14 432
[4] Danto S, Houizot P, Boussard-Pledel C, Zhang X H, Smektala F, Lucas J 2006 Adv. Funct. Mater. 16 1847
[5] Nie Q H, Wang G X, Wang X S, Dai S X, Deng S W, Xu T F, Shen X 2010 Opt. Commun. 283 4004
[6] Saheb P Z, Asokan S, Gowda K A 2003 J. Opt. and Adv. Mater. 5 215
[7] Wilhelm A A, Boussard-Plédel C, Coulombier Q, Lucas J, Bureau B, Lucas P 2007 Adv. Mater. 19 3796
[8] Portier J H 1989 J. Non-cryst. Solids 112 15
[9] Arif M, Blinov L. N 2004 Glass Phys. Chem. 30 337
[10] Wang G X, Nie Q H, Wang X S, Dai S X, Xu T F, Shen X, Zhang X H 2010 Physic B: Condensed Matter 405 4424
[11] Nie Q H, Wang G X, Wang X S, Xu T F, Dai S X, Shen X 2010 Acta Phys. Sin. 59 414 (in Chinese) [聂秋华、王国祥、王训四、徐铁峰、戴世勋、沈 祥 2010 物理学报 59 414]
[12] Yang Z, Tang G, Luo L, Chen W 2007 J. Am. Ceram. Soc. 90 667
[13] Cramer C, Grimsditch M, Saboungi M L 1999 J. Phys. Chem. B 103 4018
[14] Ishikawa M, Sekine M, Usuki T, Nasu T 2010 J. Phys. Soc. Japan 79 137
[15] Wang J S, Vogel E M, Snitzer E 1994 Opt. Mater. 3 187
[16] Duffy J A 1986 J. Solid State Chem. 62 145
[17] Dimitrov V, Komatsu T 1999 J. Ceram. Soc. Jpn. 107 1012
[18] Tauc J 1974 Amorphous and Liquid Semiconductor (New York: Plenium Press) p171
[19] Ye C, Ning Z Y, Cheng S H ,Wang X Y 2002 Acta Phys. Sin. 51 2640 (in Chinese) [叶 超、宁兆元、程珊华、王响英 2002 物理学报 51 2640]
[20] Pauling L 1992 J. Chem. Educ. 69 519
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