Quantum dots are particles of semiconductor material with the size so small that the electron energies that can exist within them are limited. These energy levels, defined by the size of quantum dots, in turn define the bandgaps. The dots can be grown to any needed size, allowing them to be tuned across a wide variety of bandgaps without changing the underlying material or construction techniques
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
Introduction
Nowadays, the method of chemotherapy + radiation is widely used because it is more effective for cancer cells than normal cells.
However, patient’s quality of life is directly related to the targeting ability of treatment, so that method has some side effects.
So finding less toxic agents and choosing a precise delivery system is a task currently important.
Regulation of nan
광합성은 지구생태계가 유지되는 가장 중요한 반응이다.
6CO2 + 12H2O →> C6H12O6 + 6H2O + 6O2
광합성은 명반응과 CO2 고정 반응으로 일어난다.
명반응에서 H2O는 빛에 의해 분해되어 전자(e-), H+와 O2가 발생하고, 전자는 엽록체의 thylakoid 막 안팎에 존재하는 전자 전달자들로 전달되어 NADP를 환원시