Help us make Indico better by taking this survey! Aidez-nous à améliorer Indico en répondant à ce sondage !

May 26 – 31, 2024
Western University
America/Toronto timezone
Welcome to the 2024 CAP Congress Program website! / Bienvenue au siteweb du programme du Congrès de l'ACP 2024!

(POS-68) In-situ ultrafast charge carrier dynamics of the two-dimensional perovskites

May 28, 2024, 6:07 PM
2m
PAB Hallways (Western University)

PAB Hallways

Western University

Poster (Non-Student) / Affiche (Non-étudiant(e)) Condensed Matter and Materials Physics / Physique de la matière condensée et matériaux (DCMMP-DPMCM) DCMMP Poster Session & Student Poster Competition (11) | Session d'affiches DPMCM et concours d'affiches étudiantes (11)

Speaker

Prof. Jianbo Gao

Description

Despite more than 25% power conversion efficiency (PCE) of organic-inorganic metal halide perovskite (HOIP), it remains a significant challenge to improve the long-term environmental stability, which hinders their further commercial application. Two-dimensional (2D) perovskite, originating from 3D perovskite structures, can be tuned by atomic scales, leading to electronic band structure tunability beyond 3D perovskites. In addition, they show much higher environmental stability as compared to their 3D counterpart. However, the carrier photogeneration and transport mechanisms remain unclear.
In contrast to that research community mainly relied on the traditional time-resolved optical spectroscopic techniques including pump–probe and fluorescence approaches to investigate carrier diffusion dynamics, we have used the novel ultrafast photocurrent spectroscopy to investigate the carrier drift dynamics. In this project, we have investigated the 2D perovskites system including type 1 and type 2 perovskite (e.g., (4Tm)2PbI4, (BTm)2PbI4, BA2PbI4) and elucidated the nature of fundamental carrier photogeneration mechanism. Our work establishes the foundation for the 2D perovskite application in photovoltaics, photodetection, and LEDs.

Keyword-1 low dimensional
Keyword-2 drift dynamics
Keyword-3 exciton diffusion

Primary author

Prof. Jianbo Gao

Co-author

Dr Tuhin Ghosh

Presentation materials

There are no materials yet.