Conveners
(W2-2) Photovoltaic and optical materials - DCMMP / - Matériaux phovoltaïques et optiques - DPMCM
- Jolanta Lagowski (Memorial University of Newfoundland)
Ms
ELHAM REZASOLTANI
(Montreal University)
18/06/2014, 13:45
Condensed Matter and Materials Physics / Physique de la matière condensée et matériaux (DCMMP-DPMCM)
Oral (Student, In Competition) / Orale (Étudiant(e), inscrit à la compétition)
Due to the large band gap, large electron mobility and the high dielectric constant of zinc oxide (ZnO), it promises potential in organic-inorganic hybrid solar cells. However, such devices display lower efficiency compared to fully organic devices. Upon photoexcitation, excitons dissociate at the organic-inorganic interface, with the positive charge located on the organic material and the...
Po-Jui Chen
(Y)
18/06/2014, 14:00
Condensed Matter and Materials Physics / Physique de la matière condensée et matériaux (DCMMP-DPMCM)
Oral (Student, In Competition) / Orale (Étudiant(e), inscrit à la compétition)
Optimization of light extraction efficiency (LEE), is of crucial importance for applications ranging from LEDs to weakly emitting fluorescence based thin film chemical sensors. Refractive index differences result in a large proportion of the internal luminescence, whether electrically or optically generated, being trapped and subsequently reabsorbed within the device. As a result,...
Prof.
Clifford Champness
(Electrical and Computer Engineering Dept., McGill University)
18/06/2014, 14:15
Condensed Matter and Materials Physics / Physique de la matière condensée et matériaux (DCMMP-DPMCM)
Oral (Non-Student) / orale (non-étudiant)
The addition of sodium compounds in the fabrication of thin film CuInSe2-based solar cells has substantially increased their photovoltaic solar conversion efficiencies. However, how this improvement comes about, is still not completely understood. To help find the mechanism involved, experiments have been made in this laboratory to grow Bridgman bulk monocrystalline CuInSe2+x ingots, with...
Mark W.B. Wilson
(Massachusetts Institute of Technology)
18/06/2014, 14:30
Condensed Matter and Materials Physics / Physique de la matière condensée et matériaux (DCMMP-DPMCM)
Oral (Non-Student) / orale (non-étudiant)
Singlet exciton fission is the process in organic semiconductors by which one Coulombically-bound electron-hole pair (exciton) with net singlet spin evolves into a pair of spin-triplet excitons. Although the phenomenon has long been a curiosity in organic crystals[1], we recently demonstrated that singlet fission proceeds rapidly (80fs-400ps)[2-4] and efficiently (approaching quantitative...
Dr
Jean-Michel Nunzi
(Queen's University)
18/06/2014, 14:45
Condensed Matter and Materials Physics / Physique de la matière condensée et matériaux (DCMMP-DPMCM)
Oral (Non-Student) / orale (non-étudiant)
Nonlinear absorption was investigated in a poly (3-hexylthiophene) (P3HT) PCBM fullerene blend, one of the most popular organic solar cell’s materials. We observed three-photon absorption in the bulk hetero junction photodiode configuration. The output photocurrent of the photodiode was
interpreted in terms of the three-photon absorption properties of the P3HT:PCBM blend at 1550 nm. Can the...
