光伏材料作文开头模板英语

光伏材料作文开头模板英语
英文回答：
Photovoltaic materials are the core components of solar cells, which convert sunlight into electricity. They are composed of semiconductor materials, such as silicon, gallium arsenide, and cadmium telluride. The efficiency of a solar cell is determined by the bandgap of the semiconductor material, which is the energy difference between the valence band and the conduction band. The higher the bandgap, the more energy is required to excite an electron from the valence band to the conduction band, and the less efficient the solar cell will be.
中文回答：
光伏材料是太阳能电池的核心组成部分，它可以将太阳光转化为电能。

光伏材料由半导体材料组成，如硅、砷化镓和碲化镉。

太阳能电池的效率由半导体材料的带隙决定，带隙是价带和导带之间
的能量差。

带隙越大，从价带激发一个电子到导带所需的能量就越大，太阳能电池的效率就越低。