CHEM01200604009 Sreejith Kaniyankandy - Homi Bhabha ...

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2. 8. 4. White Light Generation- 450-1100nm Probe 78-79 2. 8. 5. Laser diagnostics 79-80 2.9. References 80-82 Chapter 3 Charge Carrier Dynamics in Ultrasmall TiO 2 -Alizarin System 3.1. Introduction 84-86 3.2. Experimental Section 3.2.1. Materials 87 3.2.2. Preparation of ultrafine TiO 2 nanoparticles 87 3.3. Results & Discussion 3.3.1. TEM & XRD Studies 88-89 3.3.2. Steady State UV-Vis Absorption Studies 89-91 3.3.3. Femtosecond Transient Absorption Studies 91-102 3.4. Conclusions 102-104 3.5. References 104-106 Chapter 4 Effect of Size Quantization on Charge Carrier Dynamics in Thiol Capped CdTe Quantum Dots 4.1. Introduction 108-110 4.2. Experimental Section: 4.2. 1. Materials 110 4.2. 2. Synthesis 111 4.3. Results & Discussion: x
4.3.1. Steady State Absorption Studies 112-113 4.3.2. Femtosecond Transient Absorption Studies 113-123 4.4. Conclusion 124 4.5. References 125-126 Chapter 5 Charge Carrier Dynamics in Tailored CdSe/ ZnTe Core Shell Nanostructure 5.1. Introduction 128-131 5.2. Experimental 5.2.1. Materials 131 5.2.2. Synthesis of CdSe QDs 131-132 5.2.3. Shell Growth 132 5.3. Result and discussion 5.3.1. TEM & XRD Studies 133-134 5.3.2. Steady state absorption and emission studies 134-137 5.3.3. Time resolved emission studies 138-140 5.3.4. Transient absorption spectroscopy of CdSe QD 140-143 5.3.5. Transient absorption studies of CdSe/ZnTe core-shell QD 144-151 5.4. Conclusions 150-151 5.5. References 151-153 Chapter 6 Charge Separation in CdTe Decorated Graphene 6.1. Introduction 155-157 xi
Page 1: Charge Transfer Dynamics in Quantum
Page 7: DECLARATION I, hereby declare that
Page 11: ACKNOWLEDGEMENTS It is my privilege
Page 14 and 15: 1.3.5. Defect Mediated Relaxation 2
Page 18 and 19: 6.2. Experimental 6.2.1.Synthesis o
Page 20 and 21: devices based on QDs it has been sh
Page 22 and 23: Furthermore generation of pump (~40
Page 24 and 25: shell). This clearly indicated that
Page 26 and 27: 12. V. I. Klimov, J. Phys. Chem. B,
Page 28 and 29: 1.13 Reactant and Product Potential
Page 30 and 31: light. Inset: Kinetic traces monito
Page 32 and 33: 6.5 Transient decay kinetics of gra
Page 34 and 35: at 670 nm after exciting at 400 nm
Page 37 and 38: ABBREVIATIONS BET BQ CB CCD CdS CdT
Page 39: 1 Chapter 1
Page 42 and 43: 3 size dependent optical properties
Page 44 and 45: 5 1.2. Physics of Semiconductors 1.
Page 46 and 47: 7 As seen from the schematic, poten
Page 48 and 49: 9 Substituting this in Schrödinger
Page 50 and 51: 11 ( r, r ) ( r ) ( r ) (1.13) e
Page 52 and 53: 13 E E E 2 2 2 EX ne, le nh,
Page 54 and 55: 15 spherical symmetry of field. The
Page 56 and 57: 17 gE ( ) 2Em 2 3 3 (1.25) For a
Page 58 and 59: 19 1.3.2. Electron-Hole energy tran
Page 60 and 61: 21 Impact Ionization Figure 1.7. Sc
Page 62 and 63: 23 understanding on mechanistic asp
Page 64 and 65: 25 carriers are unable to sample th
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27 CB VB QD Metal Figure. 1. 10. Sc
Page 68 and 69:
29 energy barrier. Therefore it is
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31 1 f q 2 A qB (1.30) 2 In equa
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33 Vibrational contribution can be
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35 1. 7. 1. Electron Injection ET i
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37 Under assumption of invariance o
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39 distribution. To achieve good si
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41 initially achieved monodispersit
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43 and rate of charge transfer acro
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45 1.32 P. V. Kamat, J. Phys. Chem.
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47 Chapter 2
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49 chemical species. Since a partic
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51 fluorescence forms an important
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53 eliminated by use of standard wh
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55 sample. Raman spectroscopy is ba
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57 will appear bright and region wi
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59 volatile solvent is drop casted
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61 spots arise from diffraction fro
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63 The electrical signal is then ch
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65 delayed and inverted. The two si
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67 Pump-probe technique is one of t
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69 Amplifier Jade Stretcher fs Osci
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71 Figure 2.6. Optical layout of Ti
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73 Grating Convex Mirror Concave Mi
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75 changes the polarization from ho
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77 Grating Output Input Mirror Grat
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79 μJ has a very high peak power.
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81 2.6. Dynamical Theory of X-Ray D
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83 Chapter 3
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85 Therefore the study of interfaci
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87 3. 2. Experimental Section 3.2.1
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89 and intensity show absence of ot
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91 which is also neutral; therefore
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93 electron transfer times. This re
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95 r B a * 0 3.1 me / me Now the
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97 nonadiabatic case the electron t
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99 drastically reduced leading to a
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101 While the study of injection dy
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103 study. Based on the injection d
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105 17. L. E. Brus, J. Phys. Chem.
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107 Chapter 4
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109 of the QDs. As a result surface
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111 4.2.2. Synthesis: The CdTe QDs
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113 lower hole state. In CdSe the l
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115 4.2 inset. The kinetic traces a
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117 growth of the bleach kinetics (
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119 previous section we have discus
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121 lived charge transfer complex w
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123 100 times concentration of the
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125 4.5. References 4.1. Efros, Al.
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127 Chapter 5
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129 been made in the synthesis of t
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131 metallic synthesis by arrested
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133 5.3. Result and discussion: 5.3
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135 indicating a confinement induce
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137 absorption studies that on form
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139 1000 c b PL Intensity 100 10 a
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141 samples due to a very weak exci
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143 dynamical spectrum is negligibl
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145 Earlier authors [5.4] reported
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147 Sample t r(ps) t 1(ps) t 2(ps)
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149 In addition to the cooling dyna
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151 pulse-width time scale followed
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153 5.20. Sreejith Kaniyankandy, Sa
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155 CHAPTER 6 Charge Separation in
Page 205 and 206:
157 Studies by Wang et. al. [6.15]
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159 graphene in a 1M NaOH solution.
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161 Intensity (a.u.) 5 4 3 2 1 CdTe
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163 dynamics of graphene oxide and
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165 GO as shown in the Figure 3 rev
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167 electron acceptor for Graphene.
Page 217 and 218:
169 governs the recombination dynam
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171 Sample τ 1 (ps) τ 2 (ps) τ 3
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173 A (mO.D) 10.0 0.0 -10.0 -20.0 0
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175 involved in the relaxation may
Page 225 and 226:
177 Electron quencher (benzoquinone
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179 Scheme 6.1. Schematic of Electr
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181 6.6. Reina, A.; Jia, X.; Ho, J.
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183 6.26. Kaiser, A. B.; Navarro, C
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185 assigned to injection into diff
Page 236 and 237:
187 transfer from CdSe core to ZnTe
Page 238 and 239:
189 However the position of bands i
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CHEM01200604009 Sreejith Kaniyankandy - Homi Bhabha ...

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