{"id":783,"date":"2022-06-20T14:54:11","date_gmt":"2022-06-20T14:54:11","guid":{"rendered":"https:\/\/solarsquare.in\/blog\/?p=783"},"modified":"2024-09-30T14:41:47","modified_gmt":"2024-09-30T14:41:47","slug":"solar-cell-construction","status":"publish","type":"post","link":"https:\/\/staging.solarsquare.in\/sse-blog\/solar-cell-construction\/","title":{"rendered":"How Is A Solar Cell Made: Construction, Working & Power Output"},"content":{"rendered":"\n

A solar cell is a <\/strong>photoelectric cell that converts light energy into electrical energy. Specifically known as a photovoltaic or PV cell, the solar cell is also considered a p-n junction diode. <\/p>\n\n\n\n

It <\/strong>has specific electrical characteristics, such as current, resistance, and voltage, that change under light exposure.<\/p>\n\n\n\n

Users can combine individual solar cells to create modules commonly known as solar panels. The single-junction solar cell made of silicon can produce a maximum open-circuit voltage. This voltage is approximately 0.5 to 0.6 volts. <\/p>\n\n\n\n

A Solar cell is <\/strong>small, and when combined with a large solar panel, large amounts of renewable energy are generated. A solar cell is made up of <\/strong>boules of silicon. <\/p>\n\n\n\n

What Are Solar Cells?<\/strong><\/h3>\n\n\n\n

A solar cell, referred to as a photovoltaic cell is used to convert light energy into electricity. The effect it uses is the photovoltaic effect, which is a physical and chemical phenomenon.<\/p>\n\n\n\n

Did you know that individual solar cell devices are the main parts of photovoltaic modules? They are also called solar panels in the local language. <\/p>\n\n\n\n

Solar cells are photovoltaic, whether the energy source is sunlight or artificial light. They are useful in producing energy and electromagnetic radiation, and measuring light intensity. <\/p>\n\n\n\n

The operation of PV cells needs three main things-<\/p>\n\n\n\n

  1. Excitons, absorption of light, and plasmons or unbound electron-hole pairs.<\/li>
  2. Charge carrier separation.<\/li>
  3. Extraction of carriers to an external circuit. <\/li><\/ol>\n\n\n\n

    Construction of Solar Cells – How Is A Solar Cell Made?<\/strong><\/h3>\n\n\n\n
    \"\"
    Construction of a Solar Cell<\/figcaption><\/figure><\/div>\n\n\n\n

    A solar cell is a junction diode. The construction of a solar cell varies from that of a standard p-n junction diode. First, a thin layer of p-type semiconductor is allowed to contact a thick n-type semiconductor. Then, on the p-type semiconductor, a few finer electrodes are applied. <\/p>\n\n\n\n

    These fine electrodes do not cause any obstruction in the pathway of the light to reach the thin p-n junction. A current collecting electrode is also placed at the bottom of the n-type layer. <\/p>\n\n\n\n

    In addition, manufacturers can also encapsulate the assembly using thin glass to help prevent mechanical shocks in the solar cell. The encapsulated solar cells can be placed in an aluminium frame with a Tedlar back sheet. <\/p>\n\n\n\n

    How do solar cells function: The working principle behind solar cells<\/strong><\/h3>\n\n\n\n
    \"working
    Working of Solar Cells<\/figcaption><\/figure><\/div>\n\n\n\n

    When light reaches the p-n junction between the p and n-type semiconductors, photons easily enter through a thin p-type layer. <\/p>\n\n\n\n

    The photons provide energy to the p-n junction, creating electron-hole pairs. This light disrupts the thermal equilibrium condition of the junction, encouraging the free electrons to move to the n-type side of the junction. <\/p>\n\n\n\n

    The holes move to the junction’s p-type side in a similar pattern. As a result, free electrons on the n-type side fail to move past the junction due to a potential barrier. <\/p>\n\n\n\n

    The same barrier potential of the junction blocks the newly-created holes, causing an increased concentration of electrons on one side (at the n-type junction) and holes on the other side. This process allows the p-n junction to operate as a battery cell. <\/p>\n\n\n\n

    Types of solar cells:<\/strong><\/h3>\n\n\n\n