3. solar cells

3. Solar cells
Definition
A solar cell, or photovoltaic cell is an electrical device that converts the energy of light directly into electricity by the photovoltaic effect, which is a physical and chemical phenomenon.It is a form of photoelectric cell, defined as a device whose electrical characteristics, such as current, voltage, or resistance, vary when exposed to light. Solar cells are the building blocks of photovoltaic modules, otherwise known as solar panels.
Structure
Modern solar cells are based on semiconductor physics. They are basically just P-N junction photodiodes with a very large light-sensitive area. The photovoltaic effect, which causes the cell to convert light directly into electrical energy, occurs in the three energy-conversion layers.
现代的太阳能电池是基于半导体物理。

他们基本上只是P-N结光电二极管具有非常大的感光面积。

光伏效应导致细胞的光直接转换成电能，发生在三个能量转换层。

Principle
•Photons in sunlight hit the solar panel and are absorbed by semiconducting materials.
在太阳光的光子撞击太阳能电池板和由半导体材料吸收。

•An array of solar cells converts solar energy into a usable amount of directcurrent (DC) electricity .
太阳能电池阵列的太阳能转换成可用的直流电（DC）。

•An electric potential difference is developed.Current starts flowing through the material to cancel the potential and this electricity is captured.
电的潜在区别被挖掘，流经材料电流开始取消电位和这个电被捕获。

Principles of Solar Cell using
Solar panels are the core of the solar street light, and solar street light is the
highest part of the value. The sun's radiation is converted to electrical energy or stored in batteries.
太阳能电池板是太阳能路灯的核心，太阳能路灯是价值最高的部分。

太阳的辐
射能力转换为电能或储存在蓄电池中。

Classification
●Silicon solar cells
●Multiple compound thin film solar cells
Polymer multilayer modified electrode type solar cell
Applications
phone charging
Solar Car
Solar street light
Solar water heater
Conclusion
The development and utilization of solar energy has become the most
popular renewable energy sources. The development of solar energy is a
general trend, the solar era will coming.
开发和利用太阳能已成为最流行的可再生能源。

太阳能的发展是大势所趋，太阳能时代将来临。

Optoelectronic semiconductor slice。