Single junction structure
Poor efficiency(<30%)
Conversion rate ~ # of photon
Multi-layer structure
high efficiency(2times of 1st type)
Conversion rate ~ # of photon
Use photon energy
Very high(1hv → 2e)
Theoretical level
Dye electrons are excited by solar energy absorption
They are injected into the conduction band of TiO2
Get to counter-electrode (cathode) through the exter
Conversation 1.
M : I’ve made a contract to buy a radio.
W : What radio?
M : We don’t have any radio. So I decided.
W : Did you decide on your own without talking
it over with me?
M : Then, do I need to get permission from you
to buy a radio ? I can take care of it.
W : It is not a permission! It’s a discussion.
Conversation 2.
W : Honey, What if I get
오스트레일리아의 대륙에 처음으로 발을 디딘 사람은 Warramurrungunji라는 여성이다. 그냐는 바다로부터 북오스트레일리아 섬에 나타났고, 내륙으로 향하였으며, 그 과정에서 아이들을 낳고, 각 아이들을 특정 공간에 두었다. 그녀가 들판을 가로질러 이동하며, Warramurrungunji는 각 아이들에게 “나는 너희
나는 스페인 남부의 Estepona라는 공동체에서 자랐다.내가 16살이었던 어느 날 아침,아버지는 내가 Mijas라는 18 마일의 거리의 멀리 떨어진 마을에 차를 통해 자신을 대려가는것을 허락했는데, 그 마을 주변의 창고에서 차를 서비스받는다는 조건하에서였다.운전을 이제 막 배웠음에도 차를 사용할수 있는
Ⅰ. Definition of some terms which will be used and concepts of marketing
1. What is the marketing?
-Many people regard the marketing as sales or advertisement. This is not wrong, but it is a little bit insufficient to understand the marketing wholly. In the marketing, ‘market’ means customers or consumers who buy some products in the market. It is the first step for comprehending the m
The optical microscope, often referred to as the "light microscope", is a type of microscope which uses visible light and a system of lenses to magnify images of small samples. Optical microscopes are the oldest design of microscope and were possibly invented in their present compound form in the 17th century. Basic optical microscopes can be very simple, although there are many complex designs w
1. About topic: Our Goal & Strategy
At first, our Plan was..
Adapt SWH format in experiment class
Lack of time
Too hard for middle school student s
So, We changed our plan
Find the practical way to adapt
Writing Activity in the science class
What kind of writings can
we adapt in the science class?
What are pro & cons of those
writings?
2. 원인과 역동
4) 인지주의 모형
0 건강염려증을 가지고 있는 대상자는 대체로 통증에 대한 역치가 낮고, 신체감각에 과도하게 예민한 경향이 있다.
0 신체형장애의 일반적인 인지 특성은 다음과 같다.
첫째, 신체 증상에 대한 과도한 주의(attention)를 갖는다.
둘째, 건강에 대한 경직된 기준을
Historical Background
The 1990s
-The Age of violence and wars
-The decline of Communism
Dissolution of the USSR (1991)
Ethnic conflicts
ex) Yugoslav wars, Bosnian genocide, Rwandan genocide
The 1990s
German reunification in 1990 –
result of the fall of the Berlin Wall.
The eastern Germany (communist) integrates with western Germany (capitalist).
Globalization
-The IMF c
Ⅰ. Definition of some terms which will be used and concepts of marketing
1. What is the marketing?
-Many people regard the marketing as sales or advertisement. This is not wrong, but it is a little bit insufficient to understand the marketing wholly. In the marketing, ‘market’ means customers or consumers who buy some products in the market. It is the first step for comprehending the m