| Title |
Blue-coloured highly efficient dye-sensitized solar cells by implementing the diketopyrrolopyrrole chromophore / |
| Authors |
Yum, Jun-Ho ; Holcombe, Thomas W ; Kim, Yongjoo ; Rakstys, Kasparas ; Moehl, Thomas ; Teuscher, Joel ; Delcamp, Jared H ; Nazeeruddin, Mohammed K ; Grätzel, Michael |
| DOI |
10.1038/srep02446 |
| Full Text |
|
| Is Part of |
Scientific reports.. London : Springer Nature. 2013, vol. 3, p. 737-740.. eISSN 2045-2322 |
| Keywords [eng] |
dpp-based sensitizers ; molecular design ; nanocrystalline tio2 ; density functionals ; squaraine dyes ; alkyl chain ; far-red ; electrolyte ; graphene ; recombination |
| Abstract [eng] |
The paradigm shift in dye sensitized solar cells (DSCs) - towards donor- π bridge-acceptor (D-π-A) dyes - increases the performances of DSCs and challenges established design principles. Framed by this shifting landscape, a series of four diketopyrrolopyrrole (DPP)-based sensitizers utilizing the donor-chromophore-anchor (D-C-A) motif were investigated computationally, spectroscopically, and fabricated by systematic evaluation of finished photovoltaic cells. In all cases, the [Co(bpy)3 ] 3+/ 2+ redox-shuttle afforded superior performance compared to I 3 - /I- Aesthetically, careful molecular engineering of the DPP chromophore yielded the first example of a high-performance blue DSC - a challenge unmet since the inception of this photovoltaic technology: DPP17 yields over 10% power conversion efficiency (PCE) with the [Co(bpy)3 ] 3+/2+ electrolyte at full AM 1.5 G simulated sun light. |
| Published |
London : Springer Nature |
| Type |
Journal article |
| Language |
English |
| Publication date |
2013 |
| CC license |
|
