Configuration
Eu2+: 1s 22s 22p6 3s23p6 4s23d104p65s 2 4d105p66s2 4f5 5d
Host (band absorption )~ semiconductor material
The probability for an excited electron to lose energy by
generating lattice vibration :1012 to 1013s-1
The probability for light emission is at most 109s-1.
At finite temperature, the electron state oscillates around the
equilibrium position a
Change of conductivity being
normal state and gas detecting in sno2 grain boundary
Amount of desorption and absorption of oxide and free electron
can control sensor sensitivity
Electrode and the electrolyte solution while maintaining a constant current from the direct oxidation and reduction when measuring current to detect the gas.
Cause ionization of the electrolyte solution, the
▶find photoelectric effect
Heinrich R. Hertz
▶design solar cell experiment
Cell (Basic cell of the solar cell)
↓
Module (Form of assembling Cells)
↓
Array (Solar panel)
Hole moves toward
P type semiconductor
Electron moves toward
N type semiconductor
↓
Electrode formed
Current flows
↓
Solar cell generate
plastic film type solar cell
Prospect : Due to th
electrode (anode) and an oxidant electrode (cathode), and they are separated by an ion-conducting membrane. Oxygen passes over one electrode, and hydrogen over the other, and it generates electricity, water and heat. Fuel cells chemically combine the molecules of a fuel and oxidizer without pollution of traditional combustion.
In a fuel cell, the electricity is generated directly as an electr
The sun shines brightly on the classic facade of the main library at Fifth Avenue and 42nd Street. In the adjacent park area, pretty hustlers and drug peddlers go about their business.
FRONT STEPS
A few people lounge on the steps flanked by the familiar stone lions.
INT. MAIN READING ROOM - DAY
People are dotted throughout the room sitting at the long oak tables polished by decades of use. Readin