home › event - charge transport and recombination in organic solar cells

EVENT:

Charge transport and recombination in organic solar cells
Conferences & Talks

SPIE Optics and Photonics

21 August 2011
San Diego, California, USA

 

description

Organic solar cells have reached about 8% efficiency, but need to be more efficient to compete with other materials. An understanding of the losses of organic bulk heterojunction solar cells requires knowledge of how the heterojunction interface influences the electronic transport and recombination mechanisms. We describe how transient photoconductivity measurements and the cell spectral response provide information about the carrier mobility, recombination mechanisms and the electronic structure. We find that geminate recombination is not a dominant recombination process in P3HT:PCBM or PCDTBT:PCBM cells. Instead, there is good evidence that recombination through interface traps is important. The measurements of the electronic structure show band tail effects attributed to the material disorder. The band tails contribute to suppressing geminate recombination and allowing trap recombination. The role of the interface on the electronic structure and the electronic properties will be discussed.

 

upcoming events   view all 

The Future of Work
Stephen Hoover
12 December 2016 | Stanford, CA
Conferences & Talks  

Connecting through Play: Tech to Augment In-Person Interaction
Katherine Isbister
15 December 2016 | George E. Pake Auditorium, PARC
PARC Forum  

National Security and Diplomacy: What’s Entrepreneurship Have To Do With It?
Colonel (ret.) Peter Newell, Colonel (ret.) Joe Felter, Tom Byers
12 January 2017 | George E. Pake Auditorium, PARC
PARC Forum  

Dawn of the Labs: The Next Gen of Tech Innovation
Marzieh Nabi, Panelist
10 March 2017 - 19 March 2017 | Austin, TX
Conferences & Talks