Preparation and characterization of polystyrene films containing PbS nanoparticles
Lead sulfide, a narrow band gap semiconductor (Eg = 0.41 eV at room temperature), is very sensitive to finite size effects due to a large exciton Bohr radius (180 A). Since a large blue shift occurs when the size of the PbS nanoparticles falls below the radius of the bulk exciton, this offers the po...
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Published in | Journal of materials science Vol. 40; no. 16; pp. 4407 - 4409 |
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Main Authors | , , , , , |
Format | Journal Article |
Language | English |
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Heidelberg
Springer
01.08.2005
Springer Nature B.V |
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Abstract | Lead sulfide, a narrow band gap semiconductor (Eg = 0.41 eV at room temperature), is very sensitive to finite size effects due to a large exciton Bohr radius (180 A). Since a large blue shift occurs when the size of the PbS nanoparticles falls below the radius of the bulk exciton, this offers the possibility to adjust their optical properties in the spectral region between 1 and 2 mm, which is important for many technological applications In the present letter we suggest a procedure for the incorporation PbS nanoparticles in a polystyrene (PS) matrix. The method is based on the thermal decomposition of a lead xanthate complex within the solid polymer. |
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AbstractList | Lead sulfide, a narrow band gap semiconductor (Eg = 0.41 eV at room temperature), is very sensitive to finite size effects due to a large exciton Bohr radius (180 A). Since a large blue shift occurs when the size of the PbS nanoparticles falls below the radius of the bulk exciton, this offers the possibility to adjust their optical properties in the spectral region between 1 and 2 mm, which is important for many technological applications In the present letter we suggest a procedure for the incorporation PbS nanoparticles in a polystyrene (PS) matrix. The method is based on the thermal decomposition of a lead xanthate complex within the solid polymer. |
Author | LUYT, A. S REVAPRASADU, N SREEKUMARI NAIR, P RADHAKRISHNAN, T KOLAWOLE, G. A DJOKOVIC, V |
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Keywords | Semiconductor materials Thermal decomposition Morphology Optical properties Preparation Styrene polymer Nanocomposite Lead sulfide Experimental study Optical absorption Composite material |
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References | D. ŠAJINOVIČ (3831_CR11) 2000; 329 Z. QIAO (3831_CR3) 1999; 9 W. CASERI (3831_CR2) 2000; 21 D. Y. GODOVSKY (3831_CR1) 2000; 165 H. DU (3831_CR9) 2002; 14 A. J. I. WARD (3831_CR14) 1993; 161 R. S. KANE (3831_CR6) 1996; 8 Y. WANG (3831_CR5) 1987; 87 V. DJOKOVIĆ (3831_CR12) 2000; 21 Z. H. MBHELE (3831_CR18) 2003; 15 S. WANG (3831_CR7) 2000; 16 K. MOLLER (3831_CR16) 1989; 28 T. OKUNO (3831_CR17) 2000; 87-89 P. SREKUMARI NAIR (3831_CR13) 2004; 58 Z. QIAO (3831_CR4) 2000; 321 X. K. ZHAO (3831_CR15) 1991; 7 Z. ZHENG (3831_CR8) 1999; 11 J. KULJANIN (3831_CR19) 2002; 38 S.-H. YU (3831_CR10) 2001; 17 |
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Snippet | Lead sulfide, a narrow band gap semiconductor (Eg = 0.41 eV at room temperature), is very sensitive to finite size effects due to a large exciton Bohr radius... |
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SubjectTerms | Applied sciences Composites Exact sciences and technology Forms of application and semi-finished materials Materials science Nanoparticles Polymer industry, paints, wood Polystyrene resins Technology of polymers |
Title | Preparation and characterization of polystyrene films containing PbS nanoparticles |
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