concentration of carrier is higher at interface than surrounding. So, the carrier diffuses.
The built-in potential by different work functions of the electrodes affects.
1. sp2-hybridization of the valence electrons of two carbon atoms lead to molecular π- and σ-bondings.
2. Electrons in π bond are less influenced by nuclear relatively.
The overlap of molecular orbitals (MO’s) in
concentration
▶ Reverse bias make i-region fully depleted
▶ Photovoltaic effect
▶ Resistivity reduced according to the
Intensity of light
▶ Shorter distance between electrodes and
wider sensor width for better sensitivity
▶ Serpentine structure
√ Characteristics of IR radiation
▶ Invisible to human eyes
▶ Small energy
▶ Long wavelength
▶ Emitted f
Concentrated Solar Power, CSP) 기술이라고 한다. 기본적으로 빛은 분산(diffuse)되기 때문에 상대적으로 빛의 집적도가 낮아(a relatively low density) 태양열을 수집하기가 어렵다. 이게 바로 기업들이 도전해야 할 과제이다. 지금까지 발견한 기술은 고반사율(high reflectivity)의 거울을 이용하는 것이다. 태양열을 수집
concentration (6.0*10-3cm-3), charge carrier mobility (30.2cm2V-1s-1), and minimum resistivity (4.0*10-4 Ωcm)
RF 스퍼터링 기술을 이용하여 유리기판 위에 형성한 ZnO 박막위에 다시 동일한 방법을 통해 MZO와 GZO 타겟으로 박막을 형성하였다. 형성된 박막의 형태적, 구조적 그리고 전기적인 특성들을 확인하기 위해 전자 주사 현
AFM images of produced ZnO thin film samples in ratio of 5:5(a) and 7:3(b)
Although both surfaces of sample is almost smooth, You can see the more oxygen concentration is contained, the bigger grain sizes of surface is observed.
O2 content of working gas increased,
created bigger grains
transmittance increased
band gap energy increased
refractive index decreased
had more semiconducto