Optoelectronics with Carbon Nanotubes

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Optoelectronics with Carbon Nanotubes A Dissertation Presented by Megumi Kinoshita to The Graduate School in Partial Fulfillment of the Requirements for the Degree of Doctor of Philosophy in Physics Stony Brook University May 2011
Stony Brook University The Graduate School Megumi Kinoshita We, the dissertation committee for the above candidate for the Doctor of Philosophy degree, hereby recommend acceptance of this dissertation. Emilio E. Mendez – Dissertation Advisor Professor, Physics Philip B. Allen - Chairperson of Defense Professor, Physics Harold J. Metcalf Professor, Physics Stanislaus Wong Professor, Chemistry This dissertation is accepted by the Graduate School ii Lawrence Martin Dean of the Graduate School
Page 1: Stony Brook University The official
Page 5 and 6: diodes nonetheless show a rectifyin
Page 7 and 8: Table of Contents Abstract ........
Page 9 and 10: Chapter I List of Figures Figure
Page 11 and 12: Figure ‎V-3 Source-drain electric
Page 13 and 14: My parents have been steadfast supp
Page 15 and 16: This work explores both fundamental
Page 17 and 18: In fact, we typically have no knowl
Page 19 and 20: (a) (b) Figure I-2 (a) Energy dispe
Page 21 and 22: (a) (b) metallic Figure I-4. One-di
Page 23 and 24: optical absorption peaks for differ
Page 25 and 26: elax rapidly to lower non-radiative
Page 27 and 28: The disorder-induced band (D-band)
Page 29 and 30: The saturation limit for semiconduc
Page 31 and 32: (a) (b) Figure I-7. (a) A schematic
Page 33 and 34: assisted tunneling through Schottky
Page 35 and 36: majority carriers that gain enough
Page 37 and 38: conventional ambipolar emission. Th
Page 39 and 40: on quartz, which remains a signific
Page 41 and 42: Chapter II Methods 1. Materials One
Page 43 and 44: diameter (< 2 nm) SWNTs at IBM T. J
Page 45 and 46: devices were annealed in vacuum at
Page 47 and 48: 3. Experimental set-up The optical
Page 49 and 50: off wavelengths of 2150 nm, 2000 nm
Page 51 and 52: Chapter III Unipolar, High-Bias Emi
Page 53 and 54:
Figure III-1. Semi-log plot of drai
Page 55 and 56:
wetting with CNTs 57 and a relative
Page 57 and 58:
Figure III-4. (Main panel) Electrol
Page 59 and 60:
By plotting the current as a functi
Page 61 and 62:
phonon temperature in broadening. S
Page 63 and 64:
found multiple tubes bound together
Page 65 and 66:
where i is the phonon mode, Tsub is
Page 67 and 68:
The main panel of Figure III-10 sho
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the effect following Perebeinos’
Page 71 and 72:
the optical phonon population is no
Page 73 and 74:
(a) Figure III-13. (a) Spectra from
Page 75 and 76:
DOP = I║ / (I┴ + I║) = 0.77.
Page 77 and 78:
inding energy for perpendicular exc
Page 79 and 80:
3. Conclusions We have examined the
Page 81 and 82:
In a split-gate scheme, a new level
Page 83 and 84:
3. Electroluminescence mechanism an
Page 85 and 86:
After calibrating our detection sys
Page 87 and 88:
(a) (b) Figure IV-3. Electrolumines
Page 89 and 90:
observed by increasing the VGS valu
Page 91 and 92:
We claimed in Chapter III that in t
Page 93 and 94:
Let us finally comment on the effic
Page 95 and 96:
Chapter V The Polarized Carbon Nano
Page 97 and 98:
(a) (b) Figure V-1. (a) SEM image o
Page 99 and 100:
oth electrons and holes can be inje
Page 101 and 102:
In the reverse direction (i.e., neg
Page 103 and 104:
4. Electroluminescence characterist
Page 105 and 106:
and drain pads (marked “S” and
Page 107 and 108:
(a) (b) Figure V-8. (a) EL intensit
Page 109 and 110:
We attribute the observation of the
Page 111 and 112:
(a) (b) (c) Figure V-9. Electrolumi
Page 113 and 114:
measurements (i.e. additional chemi
Page 115 and 116:
(a) (b) Figure V-10. Full-width at
Page 117 and 118:
mechanisms are the same for differe
Page 119 and 120:
experiment, solid line: cosine squa
Page 121 and 122:
emission observed at higher current
Page 123 and 124:
Bibliography 1. Avouris, P.; Chen,
Page 125 and 126:
30. Miyauchi, Y.; Maruyama, S., Ide
Page 127 and 128:
56. Chen, Z.; Appenzeller, J.; Knoc
Page 129 and 130:
85. Marty, L.; Adam, E.; Albert, L.
Page 131 and 132:
112. Steiner, M.; Freitag, M.; Pere
Page 133 and 134:
140. Grüneis, A.; Saito, R.; Samso
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