Converts sunlight directly into electricity
Non polluting
Long lasting sources of energy
No need of maintenance
In the long run, solar electricity is cheaper
Electrons of dye absorb solar energy
Electrons of dye are excited & Generate electron-hole pairs
Electrons transfer from dye to FTO via TiO2
1/2 I3- + e 3/2 I- at counter electrode
3/2 I- 1/2
photovoltaic effect)에 의해 起電力(기전력)이 발생하여 외부에 접속된 負荷(부하)에 전류가 흐르게 된다. 이러한 태양 전지는 필요한 단위 용량으로 直(직)·竝列(병렬) 연결하여 기후에 견디고 단단한 재료와 구조의 만들어진 태양전지 모듈(solar cell module)로 상품화 된다.
Ⅱ. 태양전지(Solar Battery)
1. 원
Organic solar cell
a photovoltaic cell that uses organic electronics like conductive organic polymers or small organic molecules for light absorption and charge transport
Basic principle of solar cell
When light is illuminated at cell, the photons are absorbed in the organic layers.
The excitons diffuse to interface between donor and acceptor.
The excitons are separated by electron
The most common form of solar cells are based on the photovoltaic (PV) effect
Two layer semi-conductor device produces a photovoltage or potential difference between the layers
No fuel cost or fuel supply problem
No pollution
High reliability
Small amount of power required
Depend on place and climate
Large scale:
Ocean navigation aid
Telecommunication system
Remote moni
1) 太陽電池(태양전지)는 태양광에너지를 직접 전기에너지로 변환할 목적으로 제작된 광전지입니다.
2) 금속과 반도체의 접촉면 또는 반도체의 pn접합에 빛을 조사(照射)하면 광전효과에 의해 광기전력이 일어나는 것을 이용한 반도체화합물 소자이다.
주) 광전효과 (光電效果: photoelectric effect) : 일반