Research output: Contribution in Book/Report/Proceedings - With ISBN/ISSN › Conference contribution/Paper › peer-review
Research output: Contribution in Book/Report/Proceedings - With ISBN/ISSN › Conference contribution/Paper › peer-review
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TY - GEN
T1 - Solar cell as a waveguide
T2 - quantum efficiency of ultrathin crystalline silicon solar cells
AU - Fang, Liping
AU - Danos, Lefteris
AU - Markvart, Tomas
PY - 2013
Y1 - 2013
N2 - An analysis of an ultra-thin crystalline silicon solar cell with 200 nm thick active layer fabricated in our laboratory shows that the behavior of quantum efficiency as a function of wavelength is primarily determined by the absorption of light in the active layer, showing a series of interference peaks. We have now modeled this solar cell in detail, perceiving the solar cell as a waveguide. Intriguingly we find that the peaks in the quantum efficiency lie close to the frequencies of the trapped (internal) modes of the waveguide. This paper provides a detailed explanation of how these modes, normally inaccessible to external observation, can be detected in external quantum response, in terms of the position of poles of the absorbance in the complex wave number plane.
AB - An analysis of an ultra-thin crystalline silicon solar cell with 200 nm thick active layer fabricated in our laboratory shows that the behavior of quantum efficiency as a function of wavelength is primarily determined by the absorption of light in the active layer, showing a series of interference peaks. We have now modeled this solar cell in detail, perceiving the solar cell as a waveguide. Intriguingly we find that the peaks in the quantum efficiency lie close to the frequencies of the trapped (internal) modes of the waveguide. This paper provides a detailed explanation of how these modes, normally inaccessible to external observation, can be detected in external quantum response, in terms of the position of poles of the absorbance in the complex wave number plane.
U2 - 10.4229/28thEUPVSEC2013-1BO.10.4
DO - 10.4229/28thEUPVSEC2013-1BO.10.4
M3 - Conference contribution/Paper
SN - 3936338337
SP - 31
EP - 33
BT - 28th European Solar Photovoltaic Conference and Exhibition
PB - EU PVSEC
ER -