Journal article

Publication year: 2016

Pages: 8938-8944

Journal: Physical Chemistry Chemical Physics

Volume number: 18

Issue number: 13

ISSN: 1463-9076

eISSN: 1463-9084

Open access status: Hybrid

DOI Link: https://doi.org/10.1039/c5cp07841e

Publisher: Royal Society of Chemistry

Abstract: 
Charge transfer dynamics in fully operational dye sensitised solar cells consisting of an electrolyte or organic spiroOMeTAD in contact with a highly porous electrodeposited ZnO film sensitised with a monolayer of the indoline dye DN216 were observed using ultrafast transient absorption spectroscopy. From the temporal evolution of spectral signatures assigned with the help of spectroelectrochemical experiments to the population and depopulation of initial, transient and final states, a model was completed for the multistep injection of photoexcited electrons from the molecular absorber to the ZnO acceptor. Injection was found to occur via three different paths with three characteristic rates: directly from the dye's lowest unoccupied molecular orbital into the ZnO conduction band (200 fs) and via intermediate molecular dominated and surface dominated hybrid states (2 ps and 10 ps, respectively).

Harvard Citation style: Minda, I., Ahmed, E., Sleziona, V., Richter, C., Beu, M., Falgenhauer, J., et al. (2016) Identification of different pathways of electron injection in dye-sensitised solar cells of electrodeposited ZnO using an indoline sensitiser, Physical Chemistry Chemical Physics, 18(13), pp. 8938-8944. https://doi.org/10.1039/c5cp07841e

APA Citation style: Minda, I., Ahmed, E., Sleziona, V., Richter, C., Beu, M., Falgenhauer, J., Miura, H., Schlettwein, D., & Schwoerer, H. (2016). Identification of different pathways of electron injection in dye-sensitised solar cells of electrodeposited ZnO using an indoline sensitiser. Physical Chemistry Chemical Physics. 18(13), 8938-8944. https://doi.org/10.1039/c5cp07841e