• Electrical Services
  • cellular and photovoltaic industries in Hawaii
  • cellular installation

Make it once, make it right

The above mantra of our company speaks directly to our unrelenting focus on quality. With this goal in mind, we have proudly served Hawaii since 1985. Because of this rich history, we bring extensive experience to the job with a staff that’s like family.

The Basics of the Photovoltaic System

Simply put, photovoltaics is the direct conversion of light into electricity. As mentioned in my previous article, some materials has a property known as the “photoelectric effect” that allows them to capture photons of light and release electrons. When these electrons are introduced into the atomic-system, an electrical current arises, and that energy can be used as electricity. Photovoltaic cells, or solar cells as they are sometimes called, are made of semiconducting materials, such as silicon. Silicon is the material used in virtually all microelectronics systems, and that includes photovoltaic systems (PV). These PV cells are treated to form an electric field in order to create a circuit, positive on one side, and negative on the other. When light from the Sun strikes the PV cell, electrons are knocked out of their stable state into outer, unstable states which cause them to travel through the semiconductor material. If the electron becomes “excited” enough to travel from atom to atom, an electric current forms: electricity. A number of these cells are electrically arranged in what is called a “photovoltaic module.” This arrangement are designed to supply electricity at a certain voltage. The modules are then arranged in what is called an “array,” which will help with the larger production of electricity. Today’s most common PV systems use what is known as a “band gap” limitation, which only allows for an equal or greater amount of photon need to free an electron in an electric circuit (these are called single junction systems). There also exists multijunction systems, systems that use multiple single junctions that use more than one band gap to  generate a voltage, that help escape the limitation of a single junction system. Technology continues to improve for photovoltaic systems, as new research focuses on using different materials for better efficiency. As shown in the historical trend for PV systems, the technology can only get better and more efficient the more effort we put into it. PV is the future.