Nội dung được dịch bởi AI, chỉ mang tính chất tham khảo
Ảnh hưởng của nhiệt độ tạo hình đến tính chất cấu trúc, quang học và điện học của các lớp màng CdS
Tóm tắt
Các lớp màng xúc tác quang hóa cadmium sulfide (CdS) được hình thành trên kính bằng phương pháp lắng đọng trong bể hóa chất (pH 9.4, 70 °C) và sau đó được xử lý nhiệt trong khí nitơ từ 423 K đến 823 K theo từng bước 100 K. Kích thước tinh thể XRD tăng theo dạng hình chữ S từ 60 nm đến 100 nm trong khi khoảng cách băng quang học giảm từ 2.42 eV xuống 2.28 eV. Xu hướng này song song với việc năng lượng Urbach giảm, nhưng chỉ đến 623 K, nơi nó lại tăng trở lại. Đây chính là nhiệt độ mà Cd hiệu quả vượt qua quá trình chuyển đổi pha từ lập phương sang lục giác, và năng lượng kích hoạt cho quá trình vận chuyển điện tử giảm xuống gần một nửa.
Từ khóa
#CdS #xúc tác quang học #xử lý nhiệt #tính chất điện họcTài liệu tham khảo
D.S. Reddy, B. Kang, S. Yu, K.R. Gunasekhar, K.N. Rao, A. Divya, P.S. Reddy Microstructure, optical and photoluminescence properties of simple thermal evaporated CdS nanocrystalline films. J. Optoelectron. Adv. Mater. 9, (12) 3747 (2007)
T. Uchihara, H. Abe, M. Matsumura, H. Tsubomura Photocatalytic hydrogen evolution from aqueous solutions of sodium sulfite using platinum-loaded CdS1–xSex mixed crystal powder. Bull. Chem. Soc. Jpn. 62, (4) 1042 (1989)
Pantoja J. Enriquez, X. Mathew Influence of the thickness on structural, optical and electrical properties of chemical bath deposited CdS thin films. Sol. Energy Mater. Sol. Cells 76, 313 (2003)
H. Zhang, X. Ma, X.D. Yang Effects of complexing agent on CdS thin films prepared by chemical bath deposition. Mater. Lett. 58, 5 (2003)
S. Tiwari, S. Tiwari Development of CdS based stable thin film photo electrochemical solar cells. Sol. Energy Mater. Sol. Cells 90, 1621 (2006)
A. Romeo, D.L. Batzer, H. Zogg, C. Vignali, A.N. Tiwari Influence of CdS growth process on structural and photovoltaic properties of CdTe/CdS solar cells. Sol. Energy Mater. Sol. Cells 67, 311 (2001)
J. Hiie, T. Dedova, V. Valdna, K. Muska Thermal annealing effect on structural and electrical properties of chemical bath-deposited CdS films. Thin Solid Films 511–512, 443 (2006)
R. Devi, P.K. Kalita, P. Purakayastha, B.K. Sarma Growth and transport properties of nanocrystalline CdS thin film. J. Optoelectron. Adv. Mater. 10, (11) 3077 (2008)
K. Ravichandran, P. Philominathan Investigations on microstructural and optical properties of CdS films fabricated by a low-cost, simplified spray technique using perfume atomizer for solar cell applications. Sol. Energy 82, 1062 (2008)
S.A. Mahmoud, A.A. Ibrahim, A.S. Riad Physical properties of thermal coating CdS thin films using a modified evaporation source. Thin Solid Films 144, 372 (2000)
H. Uda, H. Yonezawa, Y. Ohtsubo, M. Kosaka, H. Sonomura Thin CdS films prepared by metalorganic chemical vapor deposition. Sol. Energy Mater. Sol. Cells 75, 219 (2003)
J. Herrero, M.T. Gutierrez, C. Guillen, J.M. Dona, M.A. Martinez, A.M. Chaparro, R. Bayon Photovoltaic windows by chemical bath deposition. Thin Solid Films 361–362, 28 (2000)
P. Roy, S.K. Srivastava A new approach towards the growth of cadmium sulphide thin film by CBD method and its characterization. Mater. Chem. Phys. 95, 235 (2006)
B. Pradhan, A.K. Sharma, A.K. Ray Conduction studies on chemical bath-deposited nanocrystalline CdS thin films. J. Cryst. Growth 304, 388 (2007)
F. Chen, W. Jie, X. Cai Effects of supersaturation on CdS film growth from dilute solutions on glass substrate in chemical bath deposition process. Thin Solid Films 516, 2823 (2008)
Ximello-J.N. Quiebras, Contreras-G. Puente, Aguilar-J. Hernandez, Santana-G. Rodriguez, Arias-Carbajal A. Readigos Physical properties of chemical bath deposited CdS thin films. Sol. Energy Mater. Sol. Cells 82, 263 (2004)
H.E. Maliki, J.C. Bernede, S. Marsillac, J. Pinel, X. Castel, J. Pouzet Study of the influence of annealing on the properties of CBD-CdS thin films. Appl. Surf. Sci. 205, 65 (2003)
J.P. Enriquez, X. Mathew Influence of the thickness on structural, optical and electrical properties of chemical bath deposited CdS thin films. Sol. Energy Mater. Sol. Cells 76, 313 (2003)
J.H. Lee Influence of substrates on the structural and optical properties of chemically deposited CdS films. Thin Solid Films 515, 6089 (2007)
L. Wenyia, C. Xuna, C. Qiulonga, Z. Zhibin Influence of growth process on the structural, optical and electrical properties of CBD-CdS films. Mater. Lett. 59, 1 (2005)
S. Prabahar, M. Dhanam CdS thin films from two different chemical baths—Structural and optical analysis. J. Cryst. Growth 285, 41 (2005)
S.N. Sharma, R.K. Sharma, K.N. Sood, S. Singh Structural and morphological studies of chemical bath-deposited nanocrystalline CdS films and its alloys. Mater. Chem. Phys. 93, 368 (2005)
M. Kostoglou, N. Andritsos, A.J. Karabelas Progress towards modelling the CdS chemical bath deposition process. Thin Solid Films 387, 115 (2001)
B.R. Sankapal, R.S. Mane, C.D. Lokhande Deposition of CdS thin films by the successive ionic layer adsorption and reaction (SILAR) method. Mater. Res. Bull. 35, 177 (2000)
R.B. Kale, C.D. Lokande Band gap shift, structural characterization and phase transformation of CdSe thin films from nanocrystalline cubic to nanorod hexagonal on air annealing. Semicond. Sci. Technol. 1, 20 (2005)
K.L. Chopra Thin Film Phenomenon (McGraw-Hill, New York 1969)
Polycrystalline Semiconductors: Physical Properties and Applications edited by G. Harbeke (Springer, Berlin 1985)
G.I. Rusu, M.E. Popa, G.G. Rusu, I. Salaoru On the electronic transport properties of polycrystalline ZnSe films. Appl. Surf. Sci. 222, 218 (2003)
R.S. Rusu, G.I. Rusu On the electrical and optical characteristics of CdO thin films. J. Optoelectron. Adv. Mater. 7, (2) 823 (2005)
S. Erat, H. Metin, M. Ari Influence of the annealing in nitrogen on the XRD, EDX, SEM and electrical properties of chemical bath deposited CdSe thin films. Mater. Chem. Phys. 111, (1) 114 (2008)
H. Metin, F. Sat, S. Erat, M. Ari Cadmium sulphide thin films grown by CBD: The effect of thermal annealing on the structural, electrical and optical properties. J. Optoelectron. Adv. Mater. 10, (10) 2622 (2008)
H. Metin, R. Esen Annealing studies on CBD grown CdS thin films. J. Cryst. Growth 258, (1–2) 141 (2003)
B.G. Wagh, D.M. Bhagat Some studies on preparation and characterization of cadmium sulphide films. Curr. Appl. Phys. 4, 259 (2004)
Y.A. Kalandaragha, M.B. Muradov, R.K. Mamedov, M. Behboudnia, A. Khodayari Structural, compositional and optical characterization of water soluble CdS nanoparticles synthesized by ultrasonic irradiation. J. Optoelectron. Adv. Mater. Rapid Commun. 2, (1) 42 (2008)
D. Patidar, N.S. Saxena, K. Sharma, T.P. Sharma Conduction mechanism in CdZnS thick films. J. Optoelectron. Adv. Mater. Rapid Commun. 1, (7) 329 (2007)
J.N. Pankove Optical Processes in Semiconductors (Dover, New York 1971)
J. Tauc Amorphous and Liquid Semiconductors edited by J. Tauc (Plenum Press, London and New York 1974) 175
F. Urbach The long-wavelength edge of photographic sensitivity and of the electronic absorption of solids. Phys. Rev. 92, 1324 (1953)
N.F. Mott, E.A. Davis Electronic Processes in Non-Crystalline Materials (Clarendon, Oxford, UK 1979) 287
V. Bilgin, S. Kose, F. Atay, I. Akyuz The effect of substrate temperature on the structural and some physical properties of ultrasonically sprayed CdS films. Mater. Chem. Phys. 94, 103 (2005)
R.K. Nkum, A.A. Adimado, H. Totoe Band gap energies of semiconducting sulphides and selenides. Mater. Sci. Eng., B 55, 102 (1998)