Thermoelectric field effects in low-dimensional structure solar cells

✍ Scribed by Stefan Kettemann; Jean-Francois Guillemoles

• Book ID: 104428109
• Publisher: Elsevier Science
• Year: 2002
• Tongue: English
• Weight: 99 KB
• Volume: 14
• Category: Article
• ISSN: 1386-9477
• DOI: 10.1016/s1386-9477(02)00365-x

✦ Synopsis

Taking into account the temperature gradients in solar cells, it is shown that their e ciency can be increased beyond the Shockley-Queisser limit (J. Appl. Phys. 32 (1961) 510). The driving force for this gain is the temperature gradient between this region and its surroundings. A quantitative theory is given. Though the e ect is found to be weak in conventional solar cells, it is argued that it can be substantially increased by proper choice of materials and design of the device. In particular, it is shown that the insertion of a quantum well can enhance the e ciency beyond one of the single gap cell, due to the presence of temperature jumps at the heterojunctions.