scholarly journals Chemical engineering of methylammonium lead iodide/bromide perovskites: tuning of opto-electronic properties and photovoltaic performance

2015 ◽  
Vol 3 (43) ◽  
pp. 21760-21771 ◽  
Author(s):  
Byung-wook Park ◽  
Bertrand Philippe ◽  
Sagar M. Jain ◽  
Xiaoliang Zhang ◽  
Tomas Edvinsson ◽  
...  
Keyword(s):  
Electronic Properties ◽  
Chemical Engineering ◽  
Photovoltaic Performance ◽  
Lead Iodide ◽  
Hybrid Perovskite ◽  
Lead Source ◽  
Methylammonium Lead Iodide

A convenient 1-step spincoating method for the hybrid perovskite MAPb(I1−xBrx)3(Cl)y, with PbCl2 as lead source, enables tuning of the bandgap.

scholarly journals Effect of surface composition on electronic properties of methylammonium lead iodide perovskite

2015 ◽  
Vol 1 (3) ◽  
pp. 213-220 ◽  
Author(s):  
Wei Geng ◽  
Chuan-Jia Tong ◽  
Zhen-Kun Tang ◽  
ChiYung Yam ◽  
Yan-Ning Zhang ◽  
...  
Keyword(s):  
Electronic Properties ◽  
Surface Composition ◽  
Lead Iodide ◽  
Methylammonium Lead Iodide ◽  
Effect Of Surface

scholarly journals Structure and interstitial iodide migration in hybrid perovskite methylammonium lead iodide

2017 ◽  
Vol 8 (1) ◽  
Author(s):  
J. L. Minns ◽  
P. Zajdel ◽  
D. Chernyshov ◽  
W. van Beek ◽  
M. A. Green
Keyword(s):  
Lead Iodide ◽  
Hybrid Perovskite ◽  
Methylammonium Lead Iodide

scholarly journals An Emerging Visible-Light Organic–Inorganic Hybrid Perovskite for Photocatalytic Applications

Nanomaterials ◽  
2020 ◽  
Vol 10 (1) ◽  
pp. 115 ◽  
Author(s):  
Bianca-Maria Bresolin ◽  
Samia Ben Hammouda ◽  
Mika Sillanpää
Keyword(s):  
Visible Light ◽  
The Novel ◽  
Lead Iodide ◽  
Photo Degradation ◽  
Visible Light Photocatalyst ◽  
Hybrid Perovskite ◽  
Light Activity ◽  
Visible Light Active ◽  
Methylammonium Lead Iodide ◽  
Photocatalytic Applications

The development of visible-light active photocatalysts is a current challenge especially energy and environmental-related fields. Herein, methylammonium lead iodide perovskite (MAIPb) was chosen as the novel semiconductor material for its ability of absorbing visible-light. An easily reproducible and efficient method was employed to synthesize the as-mentioned material. The sample was characterized by various techniques and has been used as visible-light photocatalyst for degradation of two model pollutants: rhodamine B (RhB) and methylene-blue (MB). The photo-degradation of RhB was found to achieve about 65% after 180 min of treatment. Moreover, the efficiency was enhanced to 100% by assisting the process with a small amount of H2O2. The visible-light activity of the photocatalyst was attributed to its ability to absorb light as well as to enhance separation of photogenerated carriers. The main outcome of the present work is the investigation of a hybrid perovskite as photocatalyst for wastewater treatment.

scholarly journals Structures, Phase Transitions and Tricritical Behavior of the Hybrid Perovskite Methyl Ammonium Lead Iodide

2016 ◽  
Vol 6 (1) ◽  
Author(s):  
P. S. Whitfield ◽  
N. Herron ◽  
W. E. Guise ◽  
K. Page ◽  
Y. Q. Cheng ◽  
...  
Keyword(s):  
Phase Transition ◽  
Phase Transitions ◽  
Structural Phase ◽  
Photovoltaic Performance ◽  
Orthorhombic Phase ◽  
Structural Phase Transitions ◽  
Lead Iodide ◽  
First Order ◽  
Hybrid Perovskite ◽  
The Impact

Abstract We have examined the crystal structures and structural phase transitions of the deuterated, partially deuterated and hydrogenous organic-inorganic hybrid perovskite methyl ammonium lead iodide (MAPbI3) using time-of-flight neutron and synchrotron X-ray powder diffraction. Near 330 K the high temperature cubic phases transformed to a body-centered tetragonal phase. The variation of the order parameter Q for this transition scaled with temperature T as Q ∼ (Tc−T)β, where Tc is the critical temperature and the exponent β was close to ¼, as predicted for a tricritical phase transition. However, we also observed coexistence of the cubic and tetragonal phases over a range of temperature in all cases, demonstrating that the phase transition was in fact first-order, although still very close to tricritical. Upon cooling further, all the tetragonal phases transformed into a low temperature orthorhombic phase around 160 K, again via a first-order phase transition. Based upon these results, we discuss the impact of the structural phase transitions upon photovoltaic performance of MAPbI3 based solar cells.

The chemical origin of the p-type and n-type doping effects in the hybrid methylammonium–lead iodide (MAPbI3) perovskite solar cells

2015 ◽  
Vol 51 (80) ◽  
pp. 14917-14920 ◽  
Author(s):  
Lyubov A. Frolova ◽  
Nadezhda N. Dremova ◽  
Pavel A. Troshin
Keyword(s):  
Solar Cells ◽  
Photovoltaic Performance ◽  
Perovskite Solar Cells ◽  
Lead Iodide ◽  
Doping Effects ◽  
P Type ◽  
Methylammonium Lead Iodide

A field-induced and photoinduced self-doping chemistry of the MAPbI3 perovskite films affecting their photovoltaic performance and stability is proposed.

scholarly journals The dynamics of methylammonium ions in hybrid organic–inorganic perovskite solar cells

2015 ◽  
Vol 6 (1) ◽  
Author(s):  
Aurelien M. A. Leguy ◽  
Jarvist Moore Frost ◽  
Andrew P. McMahon ◽  
Victoria Garcia Sakai ◽  
W. Kockelmann ◽  
...  
Keyword(s):  
Solar Cells ◽  
High Efficiency ◽  
Time Window ◽  
Photovoltaic Performance ◽  
Perovskite Solar Cells ◽  
Lead Iodide ◽  
High Efficiency Solar Cells ◽  
Scattering Measurements ◽  
Quasielastic Neutron ◽  
Methylammonium Lead Iodide

Abstract Methylammonium lead iodide perovskite can make high-efficiency solar cells, which also show an unexplained photocurrent hysteresis dependent on the device-poling history. Here we report quasielastic neutron scattering measurements showing that dipolar CH3NH3 + ions reorientate between the faces, corners or edges of the pseudo-cubic lattice cages in CH3NH3PbI3 crystals with a room temperature residence time of ∼14 ps. Free rotation, π-flips and ionic diffusion are ruled out within a 1–200-ps time window. Monte Carlo simulations of interacting CH3NH3 + dipoles realigning within a 3D lattice suggest that the scattering measurements may be explained by the stabilization of CH3NH3 + in either antiferroelectric or ferroelectric domains. Collective realignment of CH3NH3 + to screen a device’s built-in potential could reduce photovoltaic performance. However, we estimate the timescale for a domain wall to traverse a typical device to be ∼0.1–1 ms, faster than most observed hysteresis.

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