Light harvesting arrays
AssigneeNorth Carolina State University
InventorJonathan S. Lindsey
Life of this patent
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Abstract
A light harvesting array useful for the manufacture of devices such as solar cells comprises: (a) a first substrate comprising a first electrode; and (b) a layer of light harvesting rods electrically coupled to the first electrode, each of the light harvesting rods comprising a polymer of Formula I: X1[Parenopenst]Xm+1)m (I) wherein m is at least 1, and may be from two, three or four to 20 or more; X1 is a charge separation group (and preferably a porphyrinic macrocycle, which may be one ligand of a double-decker sandwich compound) having an excited-state of energy equal to or lower than that of X2, and X2 through Xm+1 are chromophores (and again are preferably porphyrinic macrocycles).
Claims125
A light harvesting array, comprising:
- (a) a first substrate comprising a first electrode;
- and
- (b) a layer of light harvesting rods electrically coupled to said first electrode, each of said light harvesting rods comprising a polymer of Formula I:
- X1[Parenopenst]Xm+1)m (I)
- wherein:
- m is at least 1;
- X1 is a charge separation group having an excited-state of energy equal to or lower than that of X2;
- X2 through Xm+1 are chromophores;
- and
- at least one of X1 through Xm+1 is selected from the group consisting of chlorins, bacteriochlorins, and isobacteriochlorins.
A light harvesting array, comprising:
- (a) a first substrate comprising a first electrode;
- and
- (b) a layer of light harvesting rods electrically coupled to said first electrode, each of said light harvesting rods comprising a polymer of Formula I:
- X1[Parenopenst]Xm+1)m (I)
- wherein:
- m is at least 2;
- X1 is a charge separation group having an excited-state of energy equal to or lower than that of X2;
- X2 through Xm+1 are chromophores;
- wherein at least one of X2 through Xm+1 comprises a meso-linked porphyrinic macrocycle;
- X1 through Xm+1 are selected so that, upon injection of either an electron or hole from X1 into said first electrode, the corresponding hole or electron from X1 is transferred to at least X2;
- and
- said light-harvesting rods are intrinsic rectifiers of excited-state energy.
A light harvesting array, comprising:
- (a) a first substrate comprising a first electrode;
- and
- (b) a layer of light harvesting rods electrically coupled to said first electrode, each of said light harvesting rods comprising a polymer of Formula I:
- X1[Parenopenst]Xm+1)m (I)
- wherein:
- m is at least 1;
- X1 is a charge separation group having an excited-state of energy equal to or lower than that of X2;
- X2 through Xm+1 are chromophores;
- wherein at least one of X2 through Xm+1 comprises a meso-linked porphyrinic macrocycle;
- X1 through Xm+1 are selected so that. upon injection of either an electron or hole from X1 into said first electrode, the corresponding hole or electron from X1 is transferred to at least X2 ;
- and
- said light-harvesting rod is chemically bonded to said electrode.
A light harvesting array, comprising:
- (a) a first substrate comprising a first electrode;
- and
- (b) a layer of light harvesting rods electrically coupled to said first electrode, each of said light harvesting rods comprising a polymer of Formula I:
- X1[Parenopenst]Xm+1)m (I)
- wherein:
- m is at least 1;
- X1 is a charge separation group having an excited-state of energy equal to or lower than that of X2;
- X2 through Xm+1 are chromophores;
- wherein at least one of X1 through Xm+1 comprises a meso-linked porphyrinic macrocycle;
- X1 through Xm+1 are selected so that, upon injection of either an electron or hole from X1 into said first electrode, the corresponding hole or electron from X1 is transferred to at least X2;
- and
- said light harvesting rods are oriented substantially perpendicularly to said first electrode.
Dependencies are inferred from the claim text.