Phosphor (Energy Converter)
Inorganic phosphor materials
“Classical” inorganic phosphors usually consist of a host lattice with activator ions doped into it in small concentrations, typically a few mole percent or less.
Host lattice & Activator ion
1st type : weak interaction (Ln3+)
2nd type: strong interaction ( Mn2+, Eu2+, Ce3+, Pb2+,Sb3+, Ce3+, MoO42-, NbO43-)
Activator (+ Sensit
Free(wannier-mott)
Radius >> a(exciton Bohr radius)
Small binding energy :~ 0.01 eV
Delocalized states
Move freely through crystal
(semiconductors)
Tighthly-bound(Frenkel)
Radius ~ a(exciton Bohr radius)
large binding energy : 0.1 -1.0 eV
localized on one lattice site
Moving by hopping
(insulators and molecules)
Eadd = △E + Ec
Ec = e2/C
C = 2πεεod
(depend on geometr
The Hollow Man
written by Andrew W. Marlowe
Red Wagon
Prods.
Revised Draft
6/26/98
FADE IN:
On complete darkness.
A SMALL DOOR swings open.
A circle of light reveals that we I re looking down the
length of a tube. At the far end of the tube, we see a
gloved hand dangling a rat. The hand shoves the
frightened rat into the tube and closes the door behind
it. The rat s stark white fur bristle
본문내용
+++ Escape Sequence
2B1Q 2 Binary 1 Quarte
ary
4B3T 4 Binary 3 Te
ary
4GL 4th Generation Language, 제4 세대 언어
4b/5b 4 binary 5 binary
A-b-S Analysis by Synthesis, 합성에 의한 분석
A/D Analog-to-Digital (converter)
A20 Address line 20
AA Auto Answer mode
AAA American Arbitration Association, 미국중재협회
AAL ATM Application Layer, ATM 응용 계층, A