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J. Am. Chem. Soc., 2009, 131 (44), 16048

Page 6: 01%2(%3+/'(-4/+01%nanohub.org/groups/pvworkshop/File:Gang_Li_Session3.pdf · Z108+21F%T%NMQMV%";R% 4)+00%)(01/B01W%#+/BB)%G'(/1..%W%?+,A1)%;0(.1.2%"BU08

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Adv. Funct. Mater. 2011, 21, 3019

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PBDTT-DPP

a b

Nat. Photon. 201; ACS nano 2012

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NMQ[V%%G(0@)1'%2+,A1)%!"#%-%e[MV%X";R!Science, 334, 629 (2011)

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R. King et al., Prog. Photovolt.: Res. Appl. 2011; 19:797

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J. Nelson et al., JACS 134, 685 (2012)

Low bandgap

PBDTT-DPP:PCBM BG = 1.44eV Voc = 0.74V

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(a)   P3HT:ICBA (b)  PCDTBT:PBM BG = 1.9eV Voc = 0.85V / 0.90V

More work to do!

How to achieve 0.4V Woc? Can TMS help?

f'+U1/%%12%+0Q%#$%&'()*+,&'-.//01!

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Source: F. Krebs

McGehee et al., Adv. Energ. Mater. 1, 491 (2011)

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Eg = 1.6 eV, PCE over 8% Adv. Mater. 2010, 22, E135 H. Chen et al. Nature Photon. 2009

Eg = 2.0 eV, PCE= 7.1% JACS 2011, 133, 4625

Eg = 1.7 eV, PCE= 7.3% JACS 2011, 133, 4250 ,JACS 2011, 133, 10062

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