CHEM01200604009 Sreejith Kaniyankandy - Homi Bhabha ...

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ACKNOWLEDGEMENTS It is my privilege to thank my guide Dr. H. N. Ghosh, without his help, constant guidance, inspiration and critical suggestions throughout the period of my doctoral work. It is always a pleasure to thank my superiors Dr. T. Mukherjee, Director, Chemistry Group, Dr. S. K. Sarkar, Head, RPCD and Dr. D. K. Palit, Head, UDCS, RPCD for their constant encouragement and support throughout the period of my thesis work. I express my sincere gratitude to Dr. A. Dutta, Department of chemistry, IIT Bombay, Dr. P. V. Satyam, IOP, Bhubaneshwar, Dr. A. Das, CSMCRI, Bhavnagar and Dr. D. Srivastava, CSMCRI, Bhavnagar and their students for their support and help in carrying out experiments. I owe a lot to my colleagues S. Verma and S. Rawalekar for their help and moral support throughout the course of my work. Thanks are also due to J. A. Mondal, Chandralekha Singh, R. Ghosh for their help rendered from time to time. I am indebted to my colleagues in chemistry group for their support. My appreciation also goes out to Dr. S. N. Achary for stimulating scientific discussions. I owe a lot to my parents for the encouragement, support and love without which this PhD would not have been possible. Thanks are also due to my sister and nephew during difficult times. Last but not least, my wife for her support, encouragement and understanding without which this thesis would not have been possible. vi
Page 1: Charge Transfer Dynamics in Quantum
Page 7: DECLARATION I, hereby declare that
Page 13 and 14: CONTENTS Title Synopsis List of Fig
Page 15 and 16: 2.4.1. Introduction 51-53 2.4.2. In
Page 17 and 18: 4.3.1. Steady State Absorption Stud
Page 19 and 20: SYNOPSIS Energy based on nonrenewab
Page 21 and 22: CHAPTER 1: GENERAL INTRODUCTION Thi
Page 23 and 24: atio varied with size of samples. T
Page 25 and 26: elation behavior. These studies hav
Page 27 and 28: LIST OF FIGURES Figure Number Figur
Page 29 and 30: 2.12 Schematic diagram of autocorre
Page 31 and 32: 5.5 Time resolved emission decay tr
Page 33 and 34: LIST OF TABLES Table Number Table C
Page 35: LIST OF SCHEMES Scheme Number Schem
Page 38 and 39: NCs NPs NHE nm PD: Py QDs Qz SAED S
Page 41 and 42: 2 Chapter 1 Introduction 1.1. Nanot
Page 43 and 44: 4 size of the crystal is much large
Page 45 and 46: 6 It is clear from the figure that
Page 47 and 48: 8 ( x) u ( x) e k k ikx cos( kc)
Page 49 and 50: 10 In the previous sections the dis
Page 51 and 52: 12 correction factor in small nanoc
Page 53 and 54: 14 asymmetry. At k 0 spin orbit co
Page 55 and 56: 16 3 8 k (1.21) V It can be seen t
Page 57 and 58: 18 much larger than phonon energies
Page 59 and 60: 20 that such a process is involved
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22 electricity. This forms the basi
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24 1.5. “Improving on” QDs As m
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26 1.5.2. Semiconductor-Dye Nanostr
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28 known examples are oxidation of
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30 R P G λ ΔG * 2H RP ΔG Reactio
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32 a 1 and a 2 are radii of donor,
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34 In the above expression reactant
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36 distribution of injection rates.
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38 In the above equation Pr () is t
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40 Figure 1. 16. Nucleation and gro
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42 Additionally we also look for ho
Page 83 and 84:
44 1.14 P. Harrison, Quantum Wells,
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46 1.46 H. Gerischer, Z. Phys. Chem
Page 89 and 90:
48 Chapter 2 Experimental 2.1. Intr
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50 2.3. Fluorescence Spectroscopy F
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52 of crystal planes appear at diff
Page 95 and 96:
54 different angles and intensities
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56 2.6. Transmission Electron Micro
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58 Electron Gun Condenser Lenses Sa
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60 The kinetic energy variation ari
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62 out in time domain. For example
Page 105 and 106:
64 Light Source Excitation Monochro
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66 employed to retrieve lifetime va
Page 109 and 110:
68 ΔL Reference Pulse Δ t=2ΔL/c
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70 photodiodes for each pulse. Mech
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72 2. 8. 2. 2. Amplifier As mention
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74 multimodal and circular. The sec
Page 117 and 118:
76 Figure 2.9. Optical layout of 2-
Page 119 and 120:
78 Here E is the electric field of
Page 121 and 122:
80 diagnostic. Additionally average
Page 123:
82 2.18. J. Manz, L. Wöste, Femtos
Page 127 and 128:
84 CHAPTER 3 Charge Carrier Dynamic
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86 density of states. However, if o
Page 131 and 132:
88 3.3. Results & Discussion 3.3.1.
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90 Absorbance (a.u) 1,0 d 2 1 c b a
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92 The spectrum has been shown in t
Page 137 and 138:
94 injection dynamics where the con
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96 dye gave a pulse width limited i
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98 alizarin has extended -electron
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100 n=5 n=4 n=3 n=2 n=1 n=0 trappin
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102 energy change is the only facto
Page 147 and 148:
104 2. Nazeeruddin, M. K.; Kay, A.;
Page 149:
106 32. Duncan, W. R; Prezhdo, O. V
Page 153 and 154:
108 CHAPTER 4 Effect of Size Quanti
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110 impossible in bulk systems. For
Page 157 and 158:
112 4.3. Results & Discussion: 4.3.
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114 nm which exactly matched with t
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116 of 3.2ps (~90%) which can be at
Page 163 and 164:
118 Figure 3: Panel A: Normalized k
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120 dynamics of hot electron. The p
Page 167 and 168:
122 constants of τ 1 = 7ps (53%),
Page 169 and 170:
124 4.4 Conclusion In conclusion we
Page 171:
126 4.15. Ekimov, A. I.; Hache, F.;
Page 175 and 176:
128 CHAPTER 5 Charge Carrier Dynami
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130 CdSe/ZnTe. Feldman and coworker
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132 by reducing Se with NaBH 4 with
Page 181 and 182:
134 broadening in the present case
Page 183 and 184:
136 vis absorption spectra of the t
Page 185 and 186:
138 5.3.3. Time resolved emission s
Page 187 and 188:
140 Sample t 1 (ns) t 2 (ns) t 3 (n
Page 189 and 190:
142 can be attributed to absorption
Page 191 and 192:
144 5.3.5. Transient absorption stu
Page 193 and 194:
146 However, due to staggered band
Page 195 and 196:
148 Scheme 5.1: Schematic represent
Page 197 and 198:
150 are the reason for that contrib
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152 5.10. L. P. Balet, S. A. Ivanov
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154 Chapter 6
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156 Recently several methods like c
Page 206 and 207:
158 6.2.2. Reduction of Graphene Ox
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160 isolated CdTe QD over graphene
Page 210 and 211:
162 Figure 6.3: Time-resolved emiss
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164 carriers on laser excitation. I
Page 214 and 215:
166 absorption in the present studi
Page 216 and 217:
168 increases from 33.3% to 61.8% i
Page 218 and 219:
170 as compared to that of GO. It i
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172 components could come from trap
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174 A (m O.D.) 0 -10 -20 -30 a b Cd
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176 The cooling dynamics does not s
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178 The study clearly shows that th
Page 228 and 229:
180 From emission studies both stea
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182 6.18. C. X. Guo, H. Bin Yang, Z
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184 CHAPTER 7 Summary and Outlook 7
Page 235 and 236:
186 bleach growth times from 500fs
Page 237 and 238:
188 Study of interfacial electron t
Page 239:
190 Chapter 8 List of Publications
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CHEM01200604009 Sreejith Kaniyankandy - Homi Bhabha ...

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