1 / 20

Tandem Organic Photovoltaics Brian E. Lassiter

Tandem Organic Photovoltaics Brian E. Lassiter. Organic Photovoltaics. The promise of OPV Materials design Low-temperature processing Lightweight, low-cost materials Roll-to-roll fabrication. 7/12/2012. PARC Talk. 2. Path to Commercialization. Efficiency Lifetime Low-cost fabrication.

tejana
Download Presentation

Tandem Organic Photovoltaics Brian E. Lassiter

An Image/Link below is provided (as is) to download presentation Download Policy: Content on the Website is provided to you AS IS for your information and personal use and may not be sold / licensed / shared on other websites without getting consent from its author. Content is provided to you AS IS for your information and personal use only. Download presentation by click this link. While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server. During download, if you can't get a presentation, the file might be deleted by the publisher.

E N D

Presentation Transcript

  1. Tandem Organic PhotovoltaicsBrian E. Lassiter

  2. Organic Photovoltaics The promise of OPV • Materials design • Low-temperature processing • Lightweight, low-cost materials • Roll-to-roll fabrication 7/12/2012 PARC Talk 2

  3. Path to Commercialization • Efficiency • Lifetime • Low-cost fabrication 7/12/2012 PARC Talk 3

  4. State of the Art 7/12/2012 PARC Talk 4

  5. Tandem • Advantages • Increased absorption length • Decrease thermalization losses • Design requirements • Current must be matched in the subcells optical model Metal Back sub-cell Interlayer Front sub-cell ITO Glass 7/12/2012 PARC Talk 5

  6. Literature 6.1% 5.2% 7/12/2012 PARC Talk 6

  7. Active Materials DPSQ SubPc 7/12/2012 PARC Talk 7

  8. Device Structure Ag BCP C70 SubPc:C70 MoO3 Ag PTCBI C70 DPSQ MoO3 ITO Glass 7/12/2012 PARC Talk 8

  9. Optical Modeling SubPc:C70 DPSQ PTCBI MoO3 MoO3 BCP C70 C70 7/12/2012 PARC Talk 9

  10. Single-cell devices Ag Ag MoO3 30 nm BCP 7 nm Ag 0.1 nm C70 3 nm PTCBI 5 nm SubPc:C70 29 nm C70 10 nm MoO35nm 13.1 nm DPSQ ITO Glass MoO3 20.5 nm ITO Glass 7/12/2012 PARC Talk 10

  11. Modeling Device Characteristics 7/12/2012 PARC Talk 11

  12. Optimization Ag BCP 7 nm C70 3 nm SubPc:C70 Y nm MoO3 5 nm Ag 0.1 nm PTCBI 5 nm C70 X nm DPSQ 13 nm MoO3 20 nm ITO Glass 7/12/2012 PARC Talk 12

  13. Device Characteristics Ag BCP 7 nm C70 3 nm SubPc:C70 29 nm MoO3 5 nm Ag 0.1 nm PTCBI 5 nm C70 10 nm DPSQ 13 nm MoO3 20 nm ITO Glass 7/12/2012 PARC Talk 13

  14. Quantum Efficiency 7/12/2012 PARC Talk 14

  15. Device Performance 7/12/2012 PARC Talk 15

  16. Summary • Developed a model to predict tandem J-V characteristics • Utilized solvent vapor annealing to increase DPSQ exciton diffusion length by ~100% • Incorporated C70, increasing JSC by >30% for each sub-cell • Fabricated a tandem device with ηP = 6.6% 7/12/2012 PARC Talk 16

  17. Acknowledgements Optoelectronic Components and Materials Group Supported in part by AFOSR, DOE Sunshot Program, MKE Korea, and Global Photonic Energy Corp. 7/12/2012 PARC Talk 17

  18. 7/12/2012 PARC Talk 18

  19. 7/12/2012 PARC Talk 19

  20. Solvent Annealing of DPSQ/C60 cells DPSQ • Improved bulk crystallinity excitondiffusion (JSC) • Crystalline interfaces polaron recombination (VOC) • Optimum bilayer device: Crystalline bulk and disordered D-A interface DPSQ C60 PTCBI Ag MoO3 ITO 7/12/2012 PARC Talk

More Related