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µ d Drift mobility µ d,h Hole drift mobility µτ h,t Deep trapping mobility-lifetime product N CE Spin density of CE resonance N D Number of active donors N DB Spin density of DB resonance (N db1 +N db2 ) N db1 Spin density of db 1 resonance N db2 Spin density of db 2 resonance N P Phosphorous doping concentration N T Concentration trapped charge carrier N S Spin density ν ”Attempt-to-escape” frequency p Pressure PC Phosphorous doping concentration q Charge density Q 0 Photoinjected charge Q(t) Transient photocharge Q(∞) Collected Photocharge r,R Separation ¯R Mean intersite distance R 0 Localization Radius σ Conductivity σ D Dark conductivity S Spin operator T Temperature T S Substrate temperature t Time t ann annealing period T 1 Spin-lattice relaxation time T 2 Spin-spin relaxation time t τ Transit time T S Substrate temperature τ Lifetime τ D Deep trapping life time τ rel Dielectric relaxation time U corr Correlation energy U relax Relaxation energy U ef f Effective correlation energy V Applied voltage 117
Chapter C: Abbreviations, Physical Constants and Symbols V int v d ω w Internal voltage Drift velocity Lamor frequency Dispersion Physical Constants e 1.602 × 10 −19 C Elementary charge ε 0 8.8542 × 10 −12 AsV −1 m −1 Dielectric constant k 1.38066 × 10 −23 JK −1 Boltzmann’s constant µ B 9.274 × 10 −24 JT −1 Bohr Magneton 118
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Forschungszentrum Jülich in der He
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Forschungszentrum Jülich GmbH Inst
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Kurzfassung In der vorliegenden Arb
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Abstract The electronic properties
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Contents 1 Introduction 1 2 Fundame
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CONTENTS C Abbreviations, Physical
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Chapter 1 Introduction Solar cells
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defect states provided that they ar
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Chapter 8: In this chapter, the inf
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Chapter 2 Fundamentals In this firs
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2.2 Electronic Density of States St
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2.2 Electronic Density of States ta
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2.2 Electronic Density of States Fi
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2.3 Charge Carrier Transport influe
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2.3 Charge Carrier Transport functi
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Chapter 3 Sample Preparation and Ch
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3.1 Characterization Methods Figure
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3.1 Characterization Methods Homoge
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3.1 Characterization Methods µ Fig
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3.1 Characterization Methods compar
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3.1 Characterization Methods bution
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3.1 Characterization Methods posite
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3.2 Deposition Technique admixture
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3.3 Sample Preparation 3.3.1 Sample
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3.3 Sample Preparation reverse bias
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Chapter 4 Intrinsic Microcrystallin
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4.2 Electrical Conductivity Figure
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4.3 ESR Signals and Paramagnetic St
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4.3 ESR Signals and Paramagnetic St
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4.4 Discussion - Relation between E
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4.4 Discussion - Relation between E
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Chapter 5 N-Type Doped µc-Si:H In
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5.2 Electrical Conductivity Figure
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5.4 Dangling Bond Density Figure 5.
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5.5 Conduction Band-Tail States Fig
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5.6 Discussion concentration evalua
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5.7 Summary Figure 5.7: Schematic b
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Chapter 6 Reversible and Irreversib
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6.1 Metastable Effects in µc-Si:H
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Page 88 and 89: 6.2 Irreversible Oxidation Effects
Page 94 and 95: 6.3 On the Origin of Instability Ef
Page 96 and 97: 6.3 On the Origin of Instability Ef
Page 98 and 99: Chapter 7 Transient Photocurrent Me
Page 100 and 101: 7.2 Transient Photocurrent Measurem
Page 106 and 107: 7.3 Temperature Dependent Drift Mob
Page 108 and 109: 7.4 Multiple Trapping in Exponentia
Page 110 and 111: 7.5 Discussion Table 7.2: Multiple
Page 112 and 113: 7.5 Discussion 7.5.3 The Meaning of
Page 114 and 115: Chapter 8 Schematic Density of Stat
Page 116 and 117: silicon as shown in Fig. 8.1 b, whi
Page 118 and 119: Chapter 9 Summary In the present wo
Page 120 and 121: Appendix A Algebraic Description of
Page 122 and 123: Eq. A.7 then becomes L(t) F = sin(
Page 124 and 125: Appendix B List of Samples Table B.
Page 126 and 127: Table B.3: Parameters of n-type µc
Page 128 and 129: Appendix C Abbreviations, Physical
Page 132 and 133: Bibliography [1] E. Becquerel. Mém
Page 134 and 135: BIBLIOGRAPHY [21] D. Will, C. Lerne
Page 136 and 137: BIBLIOGRAPHY [45] H. Overhof and M.
Page 138 and 139: BIBLIOGRAPHY [66] P.W. Anderson. Ab
Page 140 and 141: BIBLIOGRAPHY [93] J.W. Orton and M.
Page 142 and 143: BIBLIOGRAPHY [121] J.R. Haynes and
Page 144 and 145: BIBLIOGRAPHY [148] W. Luft and Y.S.
Page 146 and 147: BIBLIOGRAPHY [170] G.N. Advani, R.
Page 148 and 149: List of Publications 1. T. Dylla, R
Page 150 and 151: Acknowledgments At this point, I wa
Page 152 and 153: Schriften des Forschungszentrums J
Page 159: Forschungszentrum Jülich in der He
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