1.4-FULLERENE ADDENDS IN PHOTOVOLTAIC CELLS

US 20110313189Al

(19) United States
(12) Patent Application Publication (10) Pub. No.: US 2011/0313189 A1
Varotto et al.
(54)

(43) Pub. Date:

1.4-FULLERENE ADDENDS IN
PHOTOVOLTAIC CELLS

(76) Inventors:

(51)

Dec. 22, 2011

Publication Classi?cation
Int- Cl
C07C 69/616
(2006.01)

Appl. No.:

(22) Filed:

C07C 25/22
C07C 211/61

(200601)
(2006.01)

Barbara, CA (US); Jang Jo, Goleta,
CA (U S)
(21)

Allesandro Varotto, Santa Barbara,
CA (US); Fred Wudl, Santa

C07C 43/21
C07C 39/42
B82Y99/00

(2006.01)
(2006.01)
(2011.01)

13/161,827

Jun. 16, 2011
.

(60)

(52)

.

Related U's' Apphcatlon Data
Provisional application No, 61/397,947, ?led on Jun,
18, 2010.

US. Cl. ....... .. 560/102; 568/632; 568/633; 568/732;

(57)

570/129; 564/308; 977/738
ABSTRACT

1,4 fullerene deriatives useful for solar cells are provided,

Where their structures alloW for straightforward functional iZations to tune their properties in terms of solubility and
LUMO energy levels.

(“s OH —/,
.

w
4.

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Dec. 22, 2011 Sheet 1 0f 5

US 2011/0313189 A1

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US 2011/0313189 A1

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US 2011/0313189 A1

Patent Application Publication

Dec. 22, 2011 Sheet 5 0f 5

US 2011/0313189 A1

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Dec. 22, 2011

1.4-FULLERENE ADDENDS IN