Influence of growth temperature on bulk and surface defects in hybrid lead halide perovskite films

Nanoscale ◽  
2016 ◽  
Vol 8 (3) ◽  
pp. 1627-1634 ◽  
Author(s):  
Weina Peng ◽  
Benoy Anand ◽  
Lihong Liu ◽  
Siddharth Sampat ◽  
Brandon E. Bearden ◽  
...  
Keyword(s):  
Growth Temperature ◽  
Surface Defects ◽  
Halide Perovskite ◽  
Lead Halide

Molecular‐Level Insight into Correlation between Surface Defects and Stability of Methylammonium Lead Halide Perovskite Under Controlled Humidity

Small Methods ◽  
2020 ◽  
pp. 2000834
Author(s):  
Mohammad Ali Akhavan Kazemi ◽  
Parth Raval ◽  
Kirill Cherednichekno ◽  
Jean‐Noel Chotard ◽  
Anurag Krishna ◽  
...  
Keyword(s):  
Surface Defects ◽  
Molecular Level ◽  
Halide Perovskite ◽  
Lead Halide ◽  
Insight Into

scholarly journals Mixed-Solvent Polarity-Assisted Phase Transition of Cesium Lead Halide Perovskite Nanocrystals with Improved Stability at Room Temperature

Nanomaterials ◽  
2019 ◽  
Vol 9 (11) ◽  
pp. 1537 ◽  
Author(s):  
Rui Yun ◽  
Li Luo ◽  
Jingqi He ◽  
Jiaxi Wang ◽  
Xiaofen Li ◽  
...  
Keyword(s):  
Phase Transition ◽  
Surface Defects ◽  
Defect Density ◽  
Solvent Polarity ◽  
Electrical Performance ◽  
Ammonium Bromide ◽  
Perovskite Nanocrystals ◽  
Improved Stability ◽  
Halide Perovskite ◽  
Lead Halide

Cesium lead halide perovskite nanocrystals (NCs) have attracted enormous interest in light-emitting diode, photodetector and low-threshold lasing application in terms of their unique optical and electrical performance. However, little attention has been paid to other structures associated with CsPbBr3, such as CsPb2Br5. Herein, we realize a facile method to prepare dual-phase NCs with improved stability against polar solvents by replacing conventional oleylamine with cetyltrimethyl ammonium bromide (CTAB) in the reprecipitation process. The growth of NCs can be regulated with different ratios of toluene and ethanol depending on solvent polarity, which not only obtains NCs with different sizes and morphologies, but also controls phase transition between orthorhombic CsPbBr3 and tetragonal CsPb2Br5. The photoluminescence (PL) and defect density calculated exhibit considerable solvent polarity dependence, which is ascribed to solvent polarity affecting the ability of CTAB to passivate surface defects and improve stoichiometry in the system. This new synthetic method of perovskite material will be helpful for further studies in the field of lighting and detectors.

Incorporating an Inert Polymer into the Interlayer Passivates Surface Defects in Methylammonium Lead Halide Perovskite Solar Cells

2017 ◽  
Vol 23 (58) ◽  
pp. 14650-14657 ◽  
Author(s):  
Shiqing Bi ◽  
Xuning Zhang ◽  
Liang Qin ◽  
Rong Wang ◽  
Jiyu Zhou ◽  
...  
Keyword(s):  
Solar Cells ◽  
Surface Defects ◽  
Perovskite Solar Cells ◽  
Inert Polymer ◽  
Halide Perovskite ◽  
Lead Halide

Improvement in quantum yield by suppression of trions in room temperature synthesized CsPbBr3 perovskite quantum dots for backlight displays

Nanoscale ◽  
2020 ◽  
Vol 12 (6) ◽  
pp. 3820-3826 ◽  
Author(s):  
Kashyap Dave ◽  
Zhen Bao ◽  
Satoshi Nakahara ◽  
Keiichi Ohara ◽  
Sojiro Masada ◽  
...  
Keyword(s):  
Quantum Dots ◽  
Quantum Yield ◽  
Room Temperature ◽  
Surface Defects ◽  
Synthesis Methods ◽  
Device Performance ◽  
Photoluminescence Quantum Yield ◽  
Perovskite Quantum Dots ◽  
Halide Perovskite ◽  
Lead Halide

Surface defects and synthesis methods play important roles in the photoluminescence quantum yield (PLQY), stability, and the device performance of lead halide perovskite quantum dots (PQDs).

A thiourea additive-based quadruple cation lead halide perovskite with an ultra-large grain size for efficient perovskite solar cells

Nanoscale ◽  
2019 ◽  
Vol 11 (45) ◽  
pp. 21824-21833 ◽  
Author(s):  
Jyoti V. Patil ◽  
Sawanta S. Mali ◽  
Chang Kook Hong
Keyword(s):  
Thin Films ◽  
Grain Size ◽  
Solar Cells ◽  
Power Conversion Efficiency ◽  
Conversion Efficiency ◽  
Power Conversion ◽  
Perovskite Solar Cells ◽  
Inorganic Perovskite ◽  
Halide Perovskite ◽  
Lead Halide

Controlling the grain size of the organic–inorganic perovskite thin films using thiourea additives now crossing 2 μm size with >20% power conversion efficiency.

Modulation of Excited State Dynamics in Lead Halide Perovskite Films with Electrical Bias

2019 ◽  
Author(s):  
Gergely Samu ◽  
R.A. Scheidt ◽  
A. Balog ◽  
C. Janáky ◽  
P.V. Kamat
Keyword(s):  
Excited State ◽  
Excited State Dynamics ◽  
Halide Perovskite ◽  
Electrical Bias ◽  
Lead Halide

Recent Advances on Amplified Stimulated Emission of Lead Halide Perovskite Micro/Nanostructures

2020 ◽  
Vol 41 (12) ◽  
pp. 1479-1489
Author(s):  
Ling HUANG ◽  
◽  
Hao DONG ◽  
Feng-yan JIA ◽  
Ling-dong SUN ◽  
...  
Keyword(s):  
Stimulated Emission ◽  
Recent Advances ◽  
Halide Perovskite ◽  
Amplified Stimulated Emission ◽  
Lead Halide
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