 |
Free and accessible knowledge |
Journal articles
Fullerene-grafted block copolymers used as compatibilizer in P3HT/PCBM bulk heterojunctions: morphology and photovoltaic performances
Abstract : The nanostructure of the active layer in polymer/fullerene bulk heterojunction solar cells is known to have a strong impact on the device performances. Controlling the polymer/fullerene blend morphology is therefore particularly important. In this work, a rod-coil block copolymer, based on a regioregular poly(3-hexylthiophene) electron-donor rod block and a C-60-grafted coil block, is used as compatibilizer and its influences on the thin film morphology as well as the photovoltaic performances are investigated. It is shown that a small fraction of compatibilizer can enhance the device performances in an otherwise non-optimized process. At higher fractions or long annealing times however, the fullerene-grafted copolymer is found to behave as a nucleation center and triggers the formation of fullerene crystals.
Keywords :
SOLAR-CELLS
https://hal.archives-ouvertes.fr/hal-00956850
Contributor : Dominique Richard Connect in order to contact the contributor
Submitted on : Friday, March 7, 2014 - 2:31:29 PM
Last modification on : Tuesday, April 5, 2022 - 3:28:10 AM
Contributor : Dominique Richard Connect in order to contact the contributor
Submitted on : Friday, March 7, 2014 - 2:31:29 PM
Last modification on : Tuesday, April 5, 2022 - 3:28:10 AM
Links full text
