1. The life and times of the LED — a 100-year history
2. (2) Light’s Labour’s Lost: Policies for Energy-efficient Lighting, OECD/IEA, Paris Cedex, France (2006).
3. (3) Directive 2005/32/EC on the eco-design of Energy-using Products (EuP) (http://ec.europa.eu/enterprise/eco_design/index_en.htm).
4. (4) Details available from the author: r.devonshire@sheffield.ac.uk.
5. (5) Directive 2002/95/EC of the European Parliament and of the Council of 27th January 2003 on the restriction of the use of certain hazardous substances (RoHS) in electrical and electronic equipment, Off J. Eur. Union 2003, L37, 13/02/2003 pp.19-23.