염료감응 태양전지 (그레첼 전지)

Dye + hν → Dye* → Dye+ + e (into TiO2)

개요

In a Grätzel cell, a ruthenium dye absorbs sunlight and injects an electron into the conduction band of nanocrystalline TiO₂. An iodide/triiodide electrolyte regenerates the dye. Invented by Michael Grätzel in 1991, these cells achieve 12–14% efficiency and can work in diffuse light and from flexible substrates.

일상 속 예시

Dye-sensitized solar cells can be made in colors and transparent forms, envisioned for building-integrated photovoltaics in windows.

산업적 중요성

저비용 태양에너지 변환 기술로, 유연하고 반투명한 태양전지 제조가 가능합니다. 건물 일체형 태양광(BIPV) 및 실내 조명 에너지 수확 분야에 응용됩니다.

자주 묻는 질문

What is the equation for 염료감응 태양전지 (그레첼 전지)?
The balanced equation is: Dye + hν → Dye* → Dye⁺ + e⁻ (into TiO₂).
What type of reaction is 염료감응 태양전지 (그레첼 전지)?
염료감응 태양전지 (그레첼 전지) is a 광화학 reaction. It is reversible under certain conditions.
Is 염료감응 태양전지 (그레첼 전지) exothermic or endothermic?
염료감응 태양전지 (그레첼 전지) is endothermic (absorbs energy).
What conditions are needed for 염료감응 태양전지 (그레첼 전지)?
This reaction requires a catalyst (Ruthenium bipyridyl dye).