scholarly journals Role of Lead Vacancies for Optoelectronic Properties of Lead-Halide Perovskites

2017 ◽  
Vol 122 (10) ◽  
pp. 5216-5226 ◽  
Author(s):  
Dayton J. Vogel ◽  
Talgat M. Inerbaev ◽  
Dmitri S. Kilin
Keyword(s):  
Optoelectronic Properties ◽  
Halide Perovskites ◽  
Lead Halide

Using photoluminescence to monitor the optoelectronic properties of methylammonium lead halide perovskites in light and dark over periods of days

2018 ◽  
Vol 194 ◽  
pp. 353-358 ◽  
Author(s):  
Vipul Kheraj ◽  
Brian J. Simonds ◽  
Aditi Toshniwal ◽  
Sudhajit Misra ◽  
Peter Peroncik ◽  
...  
Keyword(s):  
Optoelectronic Properties ◽  
Halide Perovskites ◽  
Lead Halide

The role of excitons in 3D and 2D lead halide perovskites

2019 ◽  
Vol 7 (39) ◽  
pp. 12006-12018 ◽  
Author(s):  
Daniela Marongiu ◽  
Michele Saba ◽  
Francesco Quochi ◽  
Andrea Mura ◽  
Giovanni Bongiovanni
Keyword(s):  
Light Emission ◽  
Minority Species ◽  
Halide Perovskites ◽  
Almost All ◽  
Lead Halide

Excitons in lead halide perovskites often go unnoticed as minority species, yet they account for almost all of light emission.

scholarly journals Recent Advancements in Crystalline Pb-Free Halide Double Perovskites

Crystals ◽  
2020 ◽  
Vol 10 (2) ◽  
pp. 62 ◽  
Author(s):  
Muhammad Usman ◽  
Qingfeng Yan
Keyword(s):  
Large Scale ◽  
Optoelectronic Properties ◽  
Double Perovskites ◽  
Ambient Conditions ◽  
Photoelectric Properties ◽  
Potential Alternative ◽  
High Carrier Mobility ◽  
Halide Perovskites ◽  
Synthesis Composition ◽  
Lead Halide

Lead halide perovskites have gained more and more attention because of their ease of synthesis and excellent photoelectric properties including a large absorption coefficient, long carrier lifetime, long carrier diffusion length, and high carrier mobility. However, their toxicity, instability, and phase degradation in ambient environments impede their large-scale applications. To address these concerns, it is desirable to find stable alternative halide perovskites without toxicity and with comparable optoelectronic properties to lead-based perovskites. Over the years, a considerable number of lead-free halide perovskites have been added to this family of materials, including A2B’B’’X6, A2BX6, and A3B2X9 type perovskites. Among these, double perovskites with the general formula A2B’B’’X6 are deemed to be a potential alternative to lead halide perovskites as they possess good stability under ambient conditions and excellent optoelectronic properties. In this review, recent progress in exploring Pb-free halide double perovskites is highlighted. The synthesis, composition-tuning, physical properties, and applications of representative 3D, 2D, and nanocrystal A2B’B’’X6 double perovskites are introduced. In addition, perspectives about current challenges and solutions in this field are also provided.

Photophysics of Hybrid Lead Halide Perovskites: The Role of Microstructure

2016 ◽  
Vol 49 (3) ◽  
pp. 536-544 ◽  
Author(s):  
Ajay Ram Srimath Kandada ◽  
Annamaria Petrozza
Keyword(s):  
Halide Perovskites ◽  
Lead Halide

scholarly journals Efficient Emission in Halide Layered Double Perovskites: The Role of Sb3+ Substitution in Cs4Cd1–xMnxBi2Cl12 Phosphors

2020 ◽  
Author(s):  
Brenda Vargas ◽  
Eduardo Coutiño-Gonzalez ◽  
Oscar Ovalle-Encinia ◽  
Citlali Sánchez-Aké ◽  
Diego Solis-Ibarra
Keyword(s):  
Optoelectronic Properties ◽  
Double Perovskites ◽  
Spin Orbit Coupling ◽  
Fixed Amount ◽  
Electronic Delocalization ◽  
The Subject ◽  
Halide Perovskites ◽  
Pl Emission ◽  
Intense Research

Layered halide perovskites and double perovskites optoelectronic properties have recently been the subject of intense research. Layered double perovskites represent the merging of both worlds, and as such, have the potential to further expand the already vast space of optoelectronic properties and applications of halide perovskites. Despite having more than 40 known members, to date, only the <111>-oriented layered double perovskites: Cs<sub>4</sub>Cd<sub>1</sub>–<sub>x</sub>Mn<sub>x</sub><b>Bi</b><sub>2</sub>Cl<sub>12</sub>, have shown efficient photoluminescence (PL). In this work, we replaced Bi with Sb to further investigate the electronic structure and PL properties of these materials, resulting in two new families of layered inorganic perovskites alloys with full solubility. The first family, Cs<sub>4</sub>Cd<sub>1</sub>–<sub>x</sub>Mn<b>Sb</b><sub>2</sub>Cl<sub>12</sub>, exhibits a PL emission at 605 nm ascribed to Mn<sup>2+</sup> centers in octahedral coordination, and a maximum photoluminescence quantum yield PLQY of 28.5%. The second family of alloys, also with full solubility, Cs<sub>4</sub>Cd<sub>0.8</sub>Mn<sub>0.2</sub>(Sb<sub>1</sub>–<sub>y</sub>Bi<sub>y</sub>)<sub>2</sub>Cl<sub>12</sub>, contains a fixed amount of Mn<sup>2+</sup> and Cd<sup>2+</sup> cations but different concentrations of the trivalent metals. This variability allows the tuning of the PL emission from 603 nm to 614 nm. We show that the decreased efficiency of the Cs<sub>4</sub>Cd<sub>1</sub>–<sub>x</sub>Mn<sub>x</sub>Sb<sub>2</sub>Cl<sub>12</sub>family compared to Cs<sub>4</sub>Cd<sub>1</sub>–<sub>x</sub>Mn<sub>x</sub><b>Bi</b><sub>2</sub>Cl<sub>12</sub>, is mostly due to a decreased spin-orbit coupling in Sb and the subsequent increased electronic delocalization compared to the Bi alloys, reducing the energy transfer to Mn<sup>2+</sup> centers. This work lays out a roadmap to understand and achieve high photoluminescence efficiencies in layered double perovskites.<p></p>

scholarly journals Insight into the role of guanidinium and cesium in triple cation lead halide perovskites

Solar RRL ◽  
2021 ◽  
Author(s):  
Susana Ramos-Terrón ◽  
José Francisco Illanes ◽  
Diego Bohoyo-Gil ◽  
Luis Camacho ◽  
Gustavo de Miguel
Keyword(s):  
Halide Perovskites ◽  
Lead Halide ◽  
Insight Into

Synergistic enhancement of Cs and Br doping in formamidinium lead halide perovskites for high performance optoelectronics

CrystEngComm ◽  
2018 ◽  
Vol 20 (37) ◽  
pp. 5510-5518 ◽  
Author(s):  
Qingxian Li ◽  
Yucheng Liu ◽  
Yunxia Zhang ◽  
Mingxin Hu ◽  
Zhou Yang ◽  
...  
Keyword(s):  
Phase Stability ◽  
High Performance ◽  
Optoelectronic Properties ◽  
Synergistic Enhancement ◽  
Halide Perovskites ◽  
Lead Halide

Cs and Br doped FAPbI3 shows better phase stability as well as optoelectronic properties, furnishing it with good optoelectronic performance.

The Role of Excitons on Light Amplification in Lead Halide Perovskites

2016 ◽  
Vol 28 (46) ◽  
pp. 10165-10169 ◽  
Author(s):  
Quan Lü ◽  
Haohan Wei ◽  
Wenzhao Sun ◽  
Kaiyang Wang ◽  
Zhiyuan Gu ◽  
...  
Keyword(s):  
Light Amplification ◽  
Halide Perovskites ◽  
Lead Halide

A high performance perovskite CH3NH3PbCl3 single crystal photodetector: benefiting from an evolutionary preparation process

2019 ◽  
Vol 7 (18) ◽  
pp. 5442-5450 ◽  
Author(s):  
Zhishuai Yuan ◽  
Wei Huang ◽  
Shoutao Ma ◽  
Gang Ouyang ◽  
Wei Hu ◽  
...  
Keyword(s):  
Single Crystal ◽  
High Performance ◽  
Optoelectronic Properties ◽  
Preparation Process ◽  
Semiconducting Materials ◽  
Inorganic Lead ◽  
Halide Perovskites ◽  
Lead Halide

Hybrid organic–inorganic lead halide perovskites (CH3NH3PbX3, X = Cl, Br, or I) are deemed to be the highest potential semiconducting materials due to their unique optoelectronic properties.

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