PHOTOVOLTAIC DEVICE COMPRISING POROUS TITANIUM OXIDE LAYER, FIRST HOLE TRANSPORT LAYER, AND SECOND HOLE TRANSPORT LAYER
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United States of America Patent
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Issued Date -
Nov 24, 2016
app pub date -
May 12, 2016
filing date -
May 19, 2015
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Abstract
A photovoltaic device according to an aspect of the present disclosure includes a first electrode, a second electrode positioned to face the first electrode, a porous titanium oxide layer on a surface of the first electrode facing the second electrode, a first hole transport layer between the porous titanium oxide layer and the second electrode, and a second hole transport layer between the first hole transport layer and the second electrode. The porous titanium oxide layer contains a porous titanium oxide that supports a photosensitizer. The first hole transport layer contains a first redox substance. The second hole transport layer contains a second redox substance. The second redox substance has a redox potential more negative than that of the first redox substance by 0.5 V or more.
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