Search results
Results from the WOW.Com Content Network
CIGS is a I-III-VI 2 compound semiconductor material composed of copper, indium, gallium, and selenium.The material is a solid solution of copper indium selenide (often abbreviated "CIS") and copper gallium selenide, with a chemical formula of CuIn x Ga (1−x) Se 2, where the value of x can vary from 1 (pure copper indium selenide) to 0 (pure copper gallium selenide).
Midsummer AB [2] (Swedish manufacturer of CIGS solar modules and sputtering equipment for thin-film solar cells) Sunflare [3] Sunplugged [4] Solar Cloth [5] Former companies or companies that no longer produce CIGS modules: IBM; International Solar Electric Technology; Flisom (founded in 2005 as a spin-off company of ETH Zürich, Switzerland)
A compound semiconductor is a semiconductor compound composed of chemical elements of at least two different species. These semiconductors form for example in periodic table groups 13–15 (old groups III–V), for example of elements from the Boron group (old group III, boron, aluminium, gallium, indium) and from group 15 (old group V, nitrogen, phosphorus, arsenic, antimony, bismuth).
Scrapped mobile phones. Mobile phone recycling describes the waste management of mobile phones, to retrieve materials used in their manufacture. Rapid technology change, low initial cost, and planned obsolescence have resulted in a fast-growing surplus, which contributes to the increasing amount of electronic waste around the globe.
The elements are spaced at intervals following a logarithmic function of the frequency, known as d or sigma. The length of the successive elements and the spacing between them gradually decrease along the boom. The relationship between the lengths is a function known as tau. Sigma and tau are the key design elements of the LPDA design.
First generation solar cells are made of crystalline silicon, also called, conventional, traditional, wafer-based solar cells and include monocrystalline (mono-Si) and polycrystalline (multi-Si) semiconducting materials. Second generation solar cells or panels are based on thin-film technology and are of commercially significant importance.
Lindsay added, “So they have the ‘alpha’ which is the most successful, the best looking and then they have ‘sigma’ which is the same thing as an alpha but humbler.”
With the rapidly falling prices of cell phones in the mid-1990s, young people began experimenting with the short message service that the mobile phone companies started offering. When the i-mode service became available, the mobile phone culture began flourishing earnestly as this service offered an E-mail application.