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File:ShockleyQueisserBreakdown2.svg

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English: The Shockley-Queisser limit for the maximum possible efficiency of a solar cell (black), and the inevitable losses that limit it (other colors). The black height is energy that can be extracted as useful electrical power; the pink height is energy of below-bandgap photons; the green height is energy lost when hot photogenerated electrons and holes relax to the band edges; the blue height is energy lost in the tradeoff between low radiative recombination versus high operating voltage. The curves are all wiggly because of IR absorption bands in the atmosphere: I used the actual AM1.5G solar spectrum data. I cross-checked the black curve with independently-calculated ones and they agree to high accuracy, [1] [2]. The other curves besides the black curve are not published in exactly this form to my knowledge, but it's a straightforward part of the same calculation.
Русский: Предел Шокли — Кейссера максимально возможного КПД солнечного элемента (черный) и неизбежные потери, которые его ограничивают (другие цвета). Высота чёрной зоны — это энергия, которую можно извлечь в виде электроэнергии; розовая — энергия фотонов ниже запрещенной зоны; зеленая высота — это потеря энергии при релаксации горячих фотогенерированных электронов и дырок на краях запрещённой зоны; синяя — это энергия, потерянная в результате компромисса между низкой рекомбинацией с излучением и высоким рабочим напряжением. Все кривые волнистые из-за полос поглощения в атмосфере.
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Source Own work
Author Sbyrnes321
Other versions Derivative works of this file:  ShockleyQueisserBreakdown2 (DE).svg

The data-file for this graph is freely available, ask me at [3]. I did the calculation in Mathematica, the plotting in Origin, and the PDF-->SVG conversion in Inkscape. The Mathematica source code is posted on my website, http://sjbyrnes.com/

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I, the copyright holder of this work, hereby publish it under the following license:
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The person who associated a work with this deed has dedicated the work to the public domain by waiving all of their rights to the work worldwide under copyright law, including all related and neighboring rights, to the extent allowed by law. You can copy, modify, distribute and perform the work, even for commercial purposes, all without asking permission.

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17 February 2011

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current23:11, 17 February 2011Thumbnail for version as of 23:11, 17 February 2011969 × 720 (106 KB)Sbyrnes321{{Information |Description ={{en|1=The Shockley-Queisser limit for the maximum possible efficiency of a solar cell (black), and the inevitable losses that limit it (other colors). The black height is energy that can be extracted as useful electrical po