色素しきそ増感ぞうかん太陽たいよう電池でんちじゃありませんでした
shikisozo ukanta iyōdenchijārimasendeshita

Noun
Desu Copula

The polite, past negative form of 色素増感太陽電池

1. Was not a dye-sensitized solar cell.

Past/Perfective
Negative
Polite
Terminal Form