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Temperature-dependent Study of the Radiative Losses in Double-quantum Well Solar Cells by Benjamin Kluftinger; Keith Barnham; Jenny Nelson; Tom Foxon; Tin Cheng is a Engineering article available to read on EtoBox.

What is Temperature-dependent Study of the Radiative Losses in Double-quantum Well Solar Cells about?

Quantum well solar cells (QWSC) have been proposed as a way to achieve a higher e$ciency than conventional homogeneous cells. A key quantity for understanding the potential of the QWSC is the spatial variation of the quasi-Fermi level separation ( $ ) which is directly linked to the radiative losses. For the "rst time we have successfully measured $ in asymmetric double QW (DQW) p}i}n diodes in the AlGaAs/GaAs system at temperatures between 200 and 295 K. We have made several signi"cant observations: (1) radiative losses through the QW decrease with increasing temperature and are clearly below the detailed balance-based predictions at room temperature. (2) $ is not the same in both wells which contradicts the assumption made by some researchers. ( 3) $ shows a dependence on the separation between the two QWs at low temperatures.

Who reads Temperature-dependent Study of the Radiative Losses in Double-quantum Well Solar Cells?

Author

Benjamin Kluftinger; Keith Barnham; Jenny Nelson; Tom Foxon; Tin Cheng

Publisher

Elsevier Science; Elsevier ; Elsevier BV (ISSN 0927-0248)

Published

2001

Language

EN

Field

Engineering (Physical Sciences)