the angle at which a beam of light hits a surface
A solid that has an irregular, badly defined arrangement of atoms in it.
replication of the natural process of photosynthesis, converting light water, and carbon dioxide into carbohydrates and oxygen.
amorphous silicon – the non-crystalline allotropic form of silicon.
The smallest particle of an element. It is made up of protons, electrons and neutrons.
A substance containing atoms or ions of two or more elements that are chemically combined.
A solid that has a regular arrangement of atoms in it.
The rate of flow of electric charge.
An innovation that disrupts an existing market.
dye-sensitized solar cell
A negatively-charged particle found in an atom.
A material that moves electrons from one place to another.
The process by which energy is derived from external sources.
An electron-hole pair formed in a small space after absorption of energy.
The Graetzel Cell, a Dye-sensitised Solar Cell named after its inventor Prof. Michael Graetzel.
The positively-charged space formed when an electron has left an atom or molecule.
A material that moves positive “holes” from one place to another.
A material that emits light but not heat.
Two or more atoms bonded together. The atoms can be from the same element or different elements.
A very small crystal that has dimensions on the nanometre scale, or 10-9 metres.
Any technology that makes use of materials that are on the nanometre scale.
A compound of oxygen and another element.
A circuit in which the power source is directly connected up to two or more components. If there is a break in the circuit, only the component in that particular circuit will be affected.
A yellow, brown, or greyish-black mineral form of calcium titanate with some rare-earth elements, which is used in certain high-temperature ceramic superconductors. Named after Count Lev Alekseevich Perovski (1792-1856), Russian statesman.
A particle of light.
Used to describe something that converts light energy into electrical energy.
A long chain of repeating units.
A positively charged particle found at the centre of an atom.
Semiconductor nanocrystals that are very small crystals between 2 and 10 nanometres in diameter.
A substance that conducts electricity under certain conditions.
A circuit in which the power source is connected up to the components one after another. If the circuit breaks anywhere, none of the components will work.
A device that converts sunlight into electricity.
The way light can travel through a substance by bouncing off the “walls” so that the light is always confined within the substance.
A semiconductor consisting of a combination of the elements titanium and oxygen.
The potential different or “push” between two points.