太阳是光能的主要来源，灯也可以散发光能。

The Sun is our main source of light energy.

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说明去镁叶绿素置换影响了细菌反应中心内激发光能传递和原初光化学反应过程。

The decaying kinetics changed in different RCs, indicating that pheophytin replacement influenced the energy transduction and primary photochemical reaction in purple bacterial reaction centers.

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有机发光二极管（OLED）发光效率很大程度上受到器件中高折射率材料（ITO/有机物）对导波光能量的制约。

The extraction efficiency of organic light-emitting diode(OLED) is restrained by the high fraction of energy of the guided wave in the high-index materials(ITO/organic).

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