Photoelectric conversion element
First Claim
1. A photoelectric conversion element, comprising:
- a first electrode;
a second electrode arranged opposite to the first electrode;
an electron transport layer arranged between the first electrode and the second electrode, at least a part of the electron transport layer being porous;
a dye layer which is in contact with the electron transport layer;
a hole transport layer arranged between the electron transport layer and the second electrode; and
short-circuit preventing moans, adjacent the first electrode, that prevents or suppresses a short-circuit between the first electrode and the hole transport layer;
the short-circuit preventing means including a barrier layer having a porosity smaller than the porosity of the electron transport layer, wherein when the porosity of the barrier layer is defined by A% and the porosity of the electron transport layer is defined by B%, the value of B/A is equal to or greater than 10.
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Accused Products
Abstract
A solar cell including a first electrode, a second electrode arranged opposite to the first electrode, an electron transport layer arranged between the first electrode and the second electrode, a dye layer D which is in contact with the electron transport layer, a hole transport layer arranged between the electron transport layer and the second electrode and being in contact with the dye layer D, and a barrier layer, and these elements are provided on a substrate. The barrier layer prevents or suppresses short-circuit between the first electrode and the hole transport layer. The porosity of the barrier layer is made smaller than that of the electron transport layer. The barrier layer is formed into a film-like shape and arranged between the first electrode and the electron transport layer. The solar cell can accomplish excellent photoelectric conversion efficiency by the provision of such a barrier layer.
126 Citations
45 Claims
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1. A photoelectric conversion element, comprising:
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a first electrode;
a second electrode arranged opposite to the first electrode;
an electron transport layer arranged between the first electrode and the second electrode, at least a part of the electron transport layer being porous;
a dye layer which is in contact with the electron transport layer;
a hole transport layer arranged between the electron transport layer and the second electrode; and
short-circuit preventing moans, adjacent the first electrode, that prevents or suppresses a short-circuit between the first electrode and the hole transport layer;
the short-circuit preventing means including a barrier layer having a porosity smaller than the porosity of the electron transport layer, wherein when the porosity of the barrier layer is defined by A% and the porosity of the electron transport layer is defined by B%, the value of B/A is equal to or greater than 10.- View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24, 25, 26, 27, 28, 29, 30, 31, 32, 33, 34, 35, 36, 37, 38, 39, 40, 41, 42, 43, 44, 45)
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Specification