Synthesis and characterization of flower-like ZnSe nanostructured thin films by chemical bath deposition (CBD) method

被引:34
作者
Bakiyaraj, G. [1 ]
Dhanasekaran, R. [1 ]
机构
[1] Anna Univ, Crystal Growth Ctr, Madras 600025, Tamil Nadu, India
关键词
Semiconductor thin films; Nanostructured materials; Chemical bath deposition; Structural properties; Optical properties;
D O I
10.1007/s13204-012-0075-y
中图分类号
TB3 [工程材料学];
学科分类号
0805 ; 080502 ;
摘要
Flower-like zinc selenide nanostructured thin films were successfully prepared by a chemical bath deposition method on non-conducting glass substrate in an aqueous alkaline medium using sodium selenosulphate as Se 2-ion source. The as-deposited films have been characterized by X-ray diffraction (XRD), high resolution scanning electron microscopy (HRSEM), energy-dispersive X-ray analysis (EDX), optical absorption, and photoluminescence spectroscopy (PL). The XRD studies reveal that the as-deposited ZnSe thin film is nanocrystalline with a face-centered cubic phase. SEM image shows the tens to hundreds of petals are self-assembled within a single nanoflower. The direct optical band gap 'Eg' for as-deposited flower-like ZnSe thin films is found to be 2.80 eV. Room temperature PL measurement indicates that the as-deposited cubic ZnSe thin films have a near band edge (NBE) emission peaked at around 440 nm (2.81 eV) and broad weak band emission peak from 552 nm (2.24 eV) to 658 nm(1.88 eV). The strong NBE emission from the flower-like ZnSe nanostructured thin films reveals their potential as building for optoelectronic devices.
引用
收藏
页码:125 / 131
页数:7
相关论文
共 24 条
[1]   Development of new buffer layers for Cu(In,Ga)Se2 solar cells [J].
Ahn, Byung Tae ;
Larina, Liudmila ;
Kim, Ki Hwan ;
Ahn, Soong Ji .
PURE AND APPLIED CHEMISTRY, 2008, 80 (10) :2091-2102
[2]   Defect-free ZnSe nanowire and nanoneedle nanostructures [J].
Aichele, Thomas ;
Tribu, Adrien ;
Bougerol, Catherine ;
Kheng, Kuntheak ;
Andre, Regis ;
Tatarenko, Serge .
APPLIED PHYSICS LETTERS, 2008, 93 (14)
[3]   Effect of annealing on structural and optoelectronic properties of nanostructured ZnSe thin films [J].
Ashraf, M. ;
Akhtar, S. M. J. ;
Khan, A. F. ;
Ali, Z. ;
Qayyum, A. .
JOURNAL OF ALLOYS AND COMPOUNDS, 2011, 509 (05) :2414-2419
[4]  
Cullity BD, 1978, ELEMENTS OF X RAYS D
[5]   Enhanced conversion efficiency in dye-sensitized solar cells based on ZnO bifunctional nanoflowers loaded with gold nanoparticles [J].
Dhas, Vivek ;
Muduli, Subas ;
Lee, Wonjoo ;
Han, Sung-Hwan ;
Ogale, Satishchandra .
APPLIED PHYSICS LETTERS, 2008, 93 (24)
[6]   Silicon nanowire array photoelectrochemical cells [J].
Goodey, Adrian P. ;
Eichfeld, Sarah M. ;
Lew, Kok-Keong ;
Redwing, Joan M. ;
Mallouk, Thomas E. .
JOURNAL OF THE AMERICAN CHEMICAL SOCIETY, 2007, 129 (41) :12344-+
[7]   Buffer layers in Cu(In,Ga)Se2 solar cells and modules [J].
Hariskos, D ;
Spiering, S ;
Powalla, M .
THIN SOLID FILMS, 2005, 480 :99-109
[8]   Templated synthesis of ZnSe nanostructures using lyotropic liquid crystals [J].
Karanikolos, GN ;
Alexandridis, P ;
Mallory, R ;
Petrou, A ;
Mountziaris, TJ .
NANOTECHNOLOGY, 2005, 16 (10) :2372-2380
[9]   Chemical bath ZnSe thin films: deposition and characterisation [J].
Lokhande, CD ;
Patil, PS ;
Ennaoui, A ;
Tributsch, H .
APPLIED SURFACE SCIENCE, 1998, 123 :294-297
[10]   Optimization of ZnSe-SiO2 nanostructures deposited by radio-frequency magnetron sputtering:: Correlations between plasma species and thin film composition, structural and microstructural properties [J].
Morales, M. ;
Vivet, N. ;
Levalois, M. ;
Bardeau, J. F. .
THIN SOLID FILMS, 2007, 515 (13) :5314-5323