%0 Journal Article %1 doi:10.1021/acs.jpclett.7b01732 %A Madjet, Mohamed El-Amine %A Berdiyorov, Golibjon R. %A El-Mellouhi, Fedwa %A Alharbi, Fahhad H %A Akimov, Alexey V. %A Kais, Sabre %D 2017 %J The Journal of Physical Chemistry Letters %K perovskite recombination simulation %N ja %P null %R 10.1021/acs.jpclett.7b01732 %T Cation Effect on Hot Carrier Cooling in Halide Perovskite Materials %U http://dx.doi.org/10.1021/acs.jpclett.7b01732 %V 0 %X Organic-inorganic lead-halide perovskites have received a revival of interest in the past few years as promising class of materials for photovoltaic applications. Despite recent extensive research, the role of cations in defining the high photovoltaic performance of these materials is not fully understood. Here, we conduct non-adiabatic molecular dynamics simulations to study and compare non-radiative hot carriers relaxation in three lead-halide perovskite materials CH\$\_3\$NH\$\_3\$PbI\$\_3\$, HC(NH\$\_2\$)\$\_2\$PbI\$\_3\$ and CsPbI\$\_3\$. It is found that the relaxation of hot carriers to the band edges occurs on the ultrafast time scale, and display a strong quantitative dependence on the nature of the cations. The obtained results are explained in terms of electron-phonon couplings, which are strongly affected by the atomic displacements in the Pb-I framework triggered by the cations dynamics.

@article{doi:10.1021/acs.jpclett.7b01732, abstract = { Organic-inorganic lead-halide perovskites have received a revival of interest in the past few years as promising class of materials for photovoltaic applications. Despite recent extensive research, the role of cations in defining the high photovoltaic performance of these materials is not fully understood. Here, we conduct non-adiabatic molecular dynamics simulations to study and compare non-radiative hot carriers relaxation in three lead-halide perovskite materials CH\$\_{3}\$NH\$\_{3}\$PbI\$\_{3}\$, HC(NH\$\_{2}\$)\$\_{2}\$PbI\$\_{3}\$ and CsPbI\$\_{3}\$. It is found that the relaxation of hot carriers to the band edges occurs on the ultrafast time scale, and display a strong quantitative dependence on the nature of the cations. The obtained results are explained in terms of electron-phonon couplings, which are strongly affected by the atomic displacements in the Pb-I framework triggered by the cations dynamics. }, added-at = {2017-09-04T16:38:45.000+0200}, author = {Madjet, Mohamed El-Amine and Berdiyorov, Golibjon R. and El-Mellouhi, Fedwa and Alharbi, Fahhad H and Akimov, Alexey V. and Kais, Sabre}, biburl = {https://www.bibsonomy.org/bibtex/2935b3b754a972dc3e0365dc605cb2620/cgoehler}, description = {Cation Effect on Hot Carrier Cooling in Halide Perovskite Materials - acs.jpclett.7b01732}, doi = {10.1021/acs.jpclett.7b01732}, eprint = {http://dx.doi.org/10.1021/acs.jpclett.7b01732}, interhash = {86f5155a5686230a618d0792f36ea64a}, intrahash = {935b3b754a972dc3e0365dc605cb2620}, journal = {The Journal of Physical Chemistry Letters}, keywords = {perovskite recombination simulation}, note = {PMID: 28862451}, number = {ja}, pages = {null}, timestamp = {2017-09-04T16:38:45.000+0200}, title = {Cation Effect on Hot Carrier Cooling in Halide Perovskite Materials}, url = {http://dx.doi.org/10.1021/acs.jpclett.7b01732}, volume = 0, year = 2017 }