TY - JOUR
T1 - Temperature Dependent Charge Carrier Dynamics in Formamidinium Lead Iodide Perovskite
AU - Gélvez-Rueda, María C.
AU - Renaud, Nicolas
AU - Grozema, Ferdinand C.
PY - 2017/10/26
Y1 - 2017/10/26
N2 - The fundamental opto-electronic properties of organic-inorganic hybrid perovskites are strongly affected by their structural parameters. These parameters are particularly critical in formamidinium lead iodide (FAPbI3), in which its large structural disorder leads to a non-perovskite yellow phase that hinders its photovoltaic performance. A clear understanding of how the structural parameters affect the opto-electronic properties is currently lacking. We have studied the opto-electronic properties of FAPbI3 using microwave conductivity measurements. We find that the mobility of FAPbI3 increases at low temperature following a phonon scattering behavior. Unlike methylammonium lead iodide (MAPbI3), there are no abrupt changes after the low-temperature β/γ phase transition and the lifetime is remarkably long. This absence of abrupt changes can be understood in terms of the reduced rotational freedom and smaller dipole moment of the formamidinium, as compared to methylammonium.
AB - The fundamental opto-electronic properties of organic-inorganic hybrid perovskites are strongly affected by their structural parameters. These parameters are particularly critical in formamidinium lead iodide (FAPbI3), in which its large structural disorder leads to a non-perovskite yellow phase that hinders its photovoltaic performance. A clear understanding of how the structural parameters affect the opto-electronic properties is currently lacking. We have studied the opto-electronic properties of FAPbI3 using microwave conductivity measurements. We find that the mobility of FAPbI3 increases at low temperature following a phonon scattering behavior. Unlike methylammonium lead iodide (MAPbI3), there are no abrupt changes after the low-temperature β/γ phase transition and the lifetime is remarkably long. This absence of abrupt changes can be understood in terms of the reduced rotational freedom and smaller dipole moment of the formamidinium, as compared to methylammonium.
UR - http://resolver.tudelft.nl/uuid:2ffa4362-d927-473d-b731-b483f6441b05
UR - http://www.scopus.com/inward/record.url?scp=85032665274&partnerID=8YFLogxK
U2 - 10.1021/acs.jpcc.7b09303
DO - 10.1021/acs.jpcc.7b09303
M3 - Article
AN - SCOPUS:85032665274
SN - 1932-7447
VL - 121
SP - 23392
EP - 23397
JO - The Journal of Physical Chemistry C
JF - The Journal of Physical Chemistry C
IS - 42
ER -