Organic photosensitive devices made using semi-orthogonal solvents and methods of making the same
Disclosed herein are organic photosensitive optoelectronic device comprising a first layer comprising one or more of a first layer material, a second layer comprising one or more of a second layer material, and a third layer comprising one or more of a third layer material. The second layer may be dissolved in a semi-orthogonal solvent. The first layer and the third layer may be very slightly soluble or practically insoluble in the semi-orthogonal solvent.
1. An organic photosensitive optoelectronic device comprising:
a first layer comprising one or more of a first layer material;
a second layer comprising one or more of a second layer material; and
a third layer comprising one or more of a third layer material,
wherein the second layer is dissolved in a semi-orthogonal solvent, and
wherein the first layer and the third layer are very slightly soluble or practically insoluble in the semi-orthogonal solvent.
2. The device of claim 1 , wherein the second layer is deposited via spin coating.
3. The device of claim 1 , wherein the first layer material is chosen from perylenes, pthalocyanines, porphyrins, napthalenes, fullerenes, nanotubules, and derivatives thereof.
4. The device of claim 1 , wherein the first layer material is chosen from C 60 , C 70 , C 76 , C 82 , C 84 , and derivatives thereof.
5. The device of claim 1 , wherein the second layer material is chosen from squaraines or squaraine derivatives.
6. The device of claim 1 , wherein the second layer material is chosen from:
2,4-bis[4-N-carbazolo-2,6-dihydroxyphenyl] squaraine (CBZSQ);
2,4-bis[4-N-phenothiazino-2,6-dihydroxyphenyl] squaraine (PTSQ);
2,4-bis[4-(N,N-diphenylamino)-2,6-dihydroxyphenyl] squaraine (DPSQ);
2,4-bis[4-(N-Phenyl-1-naphthylamino)-2,6-dihydroxyphenyl] squaraine (1NPSQ);
2,4-bis[4-(N-Phenyl-2-naphthylamino)-2,6-dihydroxyphenyl] squaraine (2NPSQ);
{2-[4-(N,N-diisobutylamino)-2,6-dihydroxyphenyl]-4-diphenylamino} squaraine (USSQ);
{2-[4-(N,N-diphenylamino)-2,6-dihydroxyphenyl]-4-diphenylamino} squaraine (DPUSQ); and
diphenylamino-squarate (YSQ).
7. The device of claim 1 , wherein the third layer material is chosen from Al, Ag, Au, MoO 3 , Li, LiF, Sn, Ti, WO 3 , indium tin oxide (ITO), tin oxide (TO), gallium indium tin oxide (GITO), zinc oxide (ZO), zinc indium tin oxide (ZITO) and derivatives thereof.
8. The device of claim 1 , wherein the semi-orthogonal solvent is a heterocyclic organic compound.
9. The device of claim 1 , wherein the semi-orthogonal solvent is chosen from tetrahydrofuran and tetrahydrofuran derivatives.
10. The device of claim 1 , wherein the first layer material is chosen from C 60 , C 70 , C 76 , C 82 , C 84 , and derivatives thereof;
wherein the second layer material is chosen from CBZSQ, PTSQ, DPSQ, 1NPSQ, 2NPSQ, USSQ, DPUSQ, and YSQ;
wherein the third layer material is chosen from Al, Ag, Au, MoO 3 , Li, LiF, Sn, Ti, WO 3 , indium tin oxide (ITO), tin oxide (TO), gallium indium tin oxide (GITO), zinc oxide (ZO), zinc indium tin oxide (ZITO) and derivatives thereof; and
wherein the semi-orthogonal solvent is chosen from tetrahydrofuran or tetrahydrofuran derivatives.
11. The device of claim 1 , wherein 1 ml of the semi-orthogonal solvent dissolves about 0.05 mg or less of the first layer and the third layer at 25° C.; and
wherein 1 ml of the semi-orthogonal solvent dissolves about 100 mg or more of the second layer at 25° C.
12. The device of claim 11 , wherein the device is a bulk heterojunction organic photovoltaic device or a tandem organic photovoltaic device.