Methylammonium Lead Bromide (CH3NH3PbBr3) is a promising material for tandem solar cell due to its high band gap. Ultrafast optical techniques on a time scale of femto- and picosecond are used to investigate the carrier dynamics in CH3NH3PbBr3. An ultrafast cooling of hot carriers occurs in sub-picoseconds in CH3NH3PbBr3 by phonon scattering. Two ultrafast relaxation processes are attributed to optical phonon scattering and acoustic phonon scattering. The relaxation processes are evidently slower when CH3NH3PbBr3 is in contact with compact TiO2 (c-TiO2) layer, suggesting better quality CH3NH3PbBr3. when deposited on c-TiO2. The nanosecond decay in CH3NH3PbBr3 film is ascribed to electron-hole recombination. With the presence of c-TiO2 layer, this process is accelerated due to electron transport across the CH3NH3PbBr3/ c-TiO2 interface.
Access to the requested content is limited to institutions that have purchased or subscribe to SPIE eBooks.
You are receiving this notice because your organization may not have SPIE eBooks access.*
*Shibboleth/Open Athens users─please
sign in
to access your institution's subscriptions.
To obtain this item, you may purchase the complete book in print or electronic format on
SPIE.org.
INSTITUTIONAL Select your institution to access the SPIE Digital Library.
PERSONAL Sign in with your SPIE account to access your personal subscriptions or to use specific features such as save to my library, sign up for alerts, save searches, etc.