Confinement-Driven Ferroelectricity in a Two-Dimensional Hybrid Lead Iodide Perovskite

2020 ◽  
Vol 142 (22) ◽  
pp. 10212-10218 ◽  
Author(s):  
Xiao-Gang Chen ◽  
Xian-Jiang Song ◽  
Zhi-Xu Zhang ◽  
Han-Yue Zhang ◽  
Qiang Pan ◽  
...  
Keyword(s):  
Two Dimensional ◽  
Lead Iodide

Thiocyanate Containing Two-Dimensional Cesium Lead Iodide Perovskite, Cs2PbI2(SCN)2: Characterization, Photovoltaic Application, and Degradation Mechanism

2018 ◽  
Vol 10 (49) ◽  
pp. 42363-42371 ◽  
Author(s):  
Youhei Numata ◽  
Yoshitaka Sanehira ◽  
Ryo Ishikawa ◽  
Hajime Shirai ◽  
Tsutomu Miyasaka
Keyword(s):  
Degradation Mechanism ◽  
Two Dimensional ◽  
Lead Iodide ◽  
Photovoltaic Application

The Effect of Organic Cation Dynamics on the Optical Properties in (PEA)2(MA)[Pb2I7] Perovskite Dimorphs

2021 ◽  
Author(s):  
Lekina Yulia ◽  
Sai Dintakurti ◽  
Benny Febriansyah ◽  
David George Bradley ◽  
Jiaxu Yan ◽  
...  
Keyword(s):  
Phase Transition ◽  
Optical Properties ◽  
Raman Scattering ◽  
Organic Cation ◽  
Two Dimensional ◽  
Lead Iodide ◽  
Temperature Dependent ◽  
Hybrid Perovskite

Two-dimensional (2D) phenylethyl ammonium (PEA+)-methyl ammonium (MA+) lead iodide ((PEA)2(MA)[Pb2I7]) hybrid perovskite exists as temperature-dependent dimorphs exhibiting an ill-defined phase transition occurring over 150 - 200 K range. Raman scattering,...

scholarly journals Improved Photovoltaic Efficiency and Amplified Photocurrent Generation in Mesoporous n = 1 Two-Dimensional Lead–Iodide Perovskite Solar Cells

2019 ◽  
Vol 31 (3) ◽  
pp. 890-898 ◽  
Author(s):  
Benny Febriansyah ◽  
Teck Ming Koh ◽  
Yulia Lekina ◽  
Nur Fadilah Jamaludin ◽  
Annalisa Bruno ◽  
...  
Keyword(s):  
Solar Cells ◽  
Perovskite Solar Cells ◽  
Two Dimensional ◽  
Lead Iodide ◽  
Photovoltaic Efficiency ◽  
Photocurrent Generation

scholarly journals Manipulating efficient light emission in two-dimensional perovskite crystals by pressure-induced anisotropic deformation

2019 ◽  
Vol 5 (7) ◽  
pp. eaav9445 ◽  
Author(s):  
Sheng Liu ◽  
Shishuai Sun ◽  
Chee Kwan Gan ◽  
Andrés Granados del Águila ◽  
Yanan Fang ◽  
...  
Keyword(s):  
Structural Changes ◽  
Light Emission ◽  
Driving Forces ◽  
Quantum Confinement Effect ◽  
Visible Spectrum ◽  
Structural Deformation ◽  
Moderate Pressure ◽  
Two Dimensional ◽  
New Paradigm ◽  
Lead Iodide

The hybrid nature and soft lattice of organolead halide perovskites render their structural changes and optical properties susceptible to external driving forces such as temperature and pressure, remarkably different from conventional semiconductors. Here, we investigate the pressure-induced optical response of a typical two-dimensional perovskite crystal, phenylethylamine lead iodide. At a moderate pressure within 3.5 GPa, its photoluminescence red-shifts continuously, exhibiting an ultrabroad energy tunability range up to 320 meV in the visible spectrum, with quantum yield remaining nearly constant. First-principles calculations suggest that an out-of-plane quasi-uniaxial compression occurs under a hydrostatic pressure, while the energy is absorbed by the reversible and elastic tilting of the benzene rings within the long-chain ligands. This anisotropic structural deformation effectively modulates the quantum confinement effect by 250 meV via barrier height lowering. The broad tunability within a relatively low pressure range will expand optoelectronic applications to a new paradigm with pressure as a tuning knob.

scholarly journals Two-Dimensional Dion–Jacobson Hybrid Lead Iodide Perovskites with Aromatic Diammonium Cations

2019 ◽  
Vol 141 (32) ◽  
pp. 12880-12890 ◽  
Author(s):  
Xiaotong Li ◽  
Weijun Ke ◽  
Boubacar Traoré ◽  
Peijun Guo ◽  
Ido Hadar ◽  
...  
Keyword(s):  
Two Dimensional ◽  
Lead Iodide

Stable two-dimensional lead iodide hybrid materials for light detection and broadband photoluminescence

2021 ◽  
Author(s):  
Mohamed Saber Lassoued ◽  
Yuan-Chao Pang ◽  
Qian-Wen Li ◽  
Xinkai Ding ◽  
Bo Jiao ◽  
...  
Keyword(s):  
Hybrid Materials ◽  
Two Dimensional ◽  
Photocurrent Response ◽  
Lead Iodide ◽  
Light Detection ◽  
Inorganic Hybrid ◽  
Hybrid Compounds ◽  
Broadband Emission

We report here two new semiconducting two-dimensional lead iodide organic–inorganic hybrid compounds with broadband emission and strong photocurrent response.

scholarly journals Ultrafast carrier thermalization in lead iodide perovskite probed with two-dimensional electronic spectroscopy

2017 ◽  
Vol 8 (1) ◽  
Author(s):  
Johannes M. Richter ◽  
Federico Branchi ◽  
Franco Valduga de Almeida Camargo ◽  
Baodan Zhao ◽  
Richard H. Friend ◽  
...  
Keyword(s):  
Electronic Spectroscopy ◽  
Two Dimensional ◽  
Lead Iodide ◽  
Ultrafast Carrier ◽  
Carrier Thermalization
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