Solution processable diketopyrrolopyrrole (DPP) cored small molecules with BODIPY end groups as novel donors for organic solar cells

Diego Cortizo-Lacalle,
Calvyn T. Howells,
Upendra K. Pandey,
Joseph Cameron,
Neil J. Findlay,
Anto Regis Inigo,
Tell Tuttle,
Peter J. Skabara and
Ifor D. W. Samuel

Full Research Paper
Published 18 Nov 2014

PDF
Album
1. Graphical Abstract
2. Figure 1: Chemical structures of DPP core 1 and BODIPY core 2.
  
  Jump to Figure 1
3. Scheme 1: Synthesis of triads 9 and 10. Reagents and conditions: (i) phosphoryl chloride, N,N-dimethylformami...
  
  Jump to Scheme 1
4. Figure 2: Cyclic voltammetry of 9 (black) and 10 (red) in solution (left) and thin-film (right). The experime...
  
  Jump to Figure 2
5. Figure 3: Normalised UV–vis absorption spectra of 9 (black), 10 (red) and DPP core (11, green) in dichloromet...
  
  Jump to Figure 3
6. Figure 4: Structure of the dithieno-DPP (11) core.
  
  Jump to Figure 4
7. Figure 5: BOD-T4 structure reported by Harriman et al. [50].
  
  Jump to Figure 5
8. Figure 6: Electrostatic potential charges for each unit in compounds 9 and 10: radical anion (blue), neutral ...
  
  Jump to Figure 6
9. Figure 7: Electrostatic potential charges for each unit in (2Th)₂DPP and (3Th)₂DPP radical anion (blue), neut...
  
  Jump to Figure 7
10. Figure 8: Frontier orbitals for radical anion SOMO (top), neutral HOMO (bottom) of 9 (left) and 10 (right).
  
  Jump to Figure 8
11. Figure 9: Incident photon to converted electron (IPCE) ratio or external quantum efficiency (EQE) for 9:PC₇₁B...
  
  Jump to Figure 9
12. Figure 10: J–V for 9:PC₇₁BM (1:3) and 10:PC₇₁BM (1:3) in the dark.
  
  Jump to Figure 10
13. Figure 11: J–V for 9:PC₇₁BM (1:3) and 10:PC₇₁BM (1:3) under illumination at 100 mW cm⁻² with an AM1.5 G source....
  
  Jump to Figure 11
14. Figure 12: Tapping mode AFM height images for 9:PC₇₁BM (1:3) (left) and 10:PC₇₁BM (1:3) (right) on fused silic...
  
  Jump to Figure 12
Supp. Info