Precursor solution dependent secondary phase defects in CsPbBr3 single crystal grown by inverse temperature crystallization

2021 ◽  
Author(s):  
Yuanbo Cheng ◽  
Menghua Zhu ◽  
Fangbao Wang ◽  
Ruichen Bai ◽  
Jinshan Yao ◽  
...  
Keyword(s):  
Single Crystal ◽  
Precursor Solution ◽  
Secondary Phase ◽  
Inverse Temperature ◽  
Crystalline Defects ◽  
Temperature Crystallization

The understanding and tailoring of crystalline defects have been a cornerstone of established semiconductors technological deployment. Here, we report the secondary phase (SP) defects of CsPb2Br5 in CsPbBr3 crystals grown...

Room temperature synthesis of perovskite (MAPbI3) single crystal by anti-solvent assisted inverse temperature crystallization method

2020 ◽  
Vol 537 ◽  
pp. 125598 ◽  
Author(s):  
Ramashanker Gupta ◽  
Tulja Bhavani Korukonda ◽  
Shailendra Kumar Gupta ◽  
Bhanu Pratap Dhamaniya ◽  
Priyanka Chhillar ◽  
...  
Keyword(s):  
Single Crystal ◽  
Room Temperature ◽  
Inverse Temperature ◽  
Temperature Synthesis ◽  
Room Temperature Synthesis ◽  
Crystallization Method ◽  
Temperature Crystallization

scholarly journals Robot-Accelerated Perovskite Investigation and Discovery (RAPID): 1. Inverse Temperature Crystallization

2019 ◽  
Author(s):  
Zhi Li ◽  
Mansoor Ani Najeeb ◽  
Liana Alves ◽  
Alyssa Sherman ◽  
Peter Cruz Parrilla ◽  
...  
Keyword(s):  
Machine Learning ◽  
Single Crystal ◽  
High Throughput ◽  
Metal Halide ◽  
Crystal Formation ◽  
Inverse Temperature ◽  
High Quality ◽  
Metal Halide Perovskite ◽  
Halide Perovskite ◽  
Temperature Crystallization

Metal halide perovskites are a promising class of materials for next-generation photovoltaic and optoelectronic devices. The discovery and full characterization of new perovskite-derived materials are limited by the difficulty of growing high quality crystals needed for single-crystal X-ray diffraction studies. We present the first automated, high-throughput approach for metal halide perovskite single crystal discovery based on inverse temperature crystallization (ITC) as a means to rapidly identify and optimize synthesis conditions for the formation of high quality single crystals. Using this automated approach, a total of 1928 metal halide perovskite synthesis reactions were conducted using six organic ammonium cations (methylammonium, ethylammonium, n-butylammonium, formamidinium, guanidinium, and acetamidinium), increasing the number of metal halide perovskite materials accessible by ITC syntheses by three and resulting in the formation of a new phase, [C<sub>2</sub>H<sub>7</sub>N<sub>2</sub>][PbI<sub>3</sub>]. This comprehensive dataset allows for a statistical quantification of the total experimental space and of the likelihood of large single crystal formation. Moreover, this dataset enables the construction and evaluation of machine learning models for predicting crystal formation conditions. This work is a proof-of-concept that combining high throughput experimentation and machine learning accelerates and enhances the study of metal halide perovskite crystallization. This approach is designed to be generalizable to different synthetic routes for the acceleration of materials discovery.

scholarly journals The Effects of Temperature on the Growth of a Lead-Free Perovskite-Like (CH3NH3)3Sb2Br9 Single Crystal for An MSM Photodetector Application

Sensors ◽  
2021 ◽  
Vol 21 (13) ◽  
pp. 4475
Author(s):  
Chien-Min Hun ◽  
Ching-Ho Tien ◽  
Kuan-Lin Lee ◽  
Hong-Ye Lai ◽  
Lung-Chien Chen
Keyword(s):  
Single Crystal ◽  
Precursor Solution ◽  
Charge Carrier Mobility ◽  
Lead Free ◽  
Optimum Growth Temperature ◽  
Photosensitive Layer ◽  
Msm Photodetector ◽  
Effects Of Temperature ◽  
High Charge Carrier Mobility ◽  
Temperature Crystallization

We have fabricated a photodetector based on (CH3NH3)3Sb2Br9 (MA3Sb2Br9) lead-free perovskite-like single crystal, which plays an important role in the optoelectronic characteristics of the photodetector as a perovskite-like photosensitive layer. Here, MA3Sb2Br9 single crystals were synthesized by an inverse temperature crystallization process with a precursor solution at three different growth temperatures, 60 °C, 80 °C, and 100 °C. As a result, a MA3Sb2Br9 single crystal with an optimum growth temperature of 60 °C presented a low trap density of 2.63 × 1011 cm−3, a high charge carrier mobility of 0.75 cm2 V−1 s−1, and excellent crystal structure and optical absorption properties. This MA3Sb2Br9 perovskite-like photodetector displayed a low dark current of 8.09 × 10−9 A, high responsivity of 0.113 A W−1, and high detectivity of 4.32 × 1011 Jones.

Synthesis, crystal structure and photoresponse of tetragonal phase single crystal CH3NH3PbCl3

2020 ◽  
Vol 56 (47) ◽  
pp. 6404-6407
Author(s):  
Yan Chen ◽  
Xuhong Hou ◽  
Siwen Tao ◽  
Xuewei Fu ◽  
Huawei Zhou ◽  
...  
Keyword(s):  
Crystal Structure ◽  
Single Crystal ◽  
Tetragonal Phase ◽  
High Sensitivity ◽  
Inverse Temperature ◽  
Uv Photodetector ◽  
Space Group ◽  
Temperature Crystallization

In this study, we synthesized tetragonal phase MAPbCl3 with the P4/mcc (124) space group by a modified inverse temperature crystallization (M-ITC) method. The UV photodetector based on SC T-MAPbCl3 exhibits high sensitivity.

scholarly journals Robot-Accelerated Perovskite Investigation and Discovery (RAPID): 1. Inverse Temperature Crystallization

2019 ◽  
Author(s):  
Zhi Li ◽  
Mansoor Ani Najeeb ◽  
Liana Alves ◽  
Alyssa Sherman ◽  
Peter Cruz Parrilla ◽  
...  
Keyword(s):  
Machine Learning ◽  
Single Crystal ◽  
High Throughput ◽  
Metal Halide ◽  
Crystal Formation ◽  
Inverse Temperature ◽  
High Quality ◽  
Metal Halide Perovskite ◽  
Halide Perovskite ◽  
Temperature Crystallization

Metal halide perovskites are a promising class of materials for next-generation photovoltaic and optoelectronic devices. The discovery and full characterization of new perovskite-derived materials are limited by the difficulty of growing high quality crystals needed for single-crystal X-ray diffraction studies. We present the first automated, high-throughput approach for metal halide perovskite single crystal discovery based on inverse temperature crystallization (ITC) as a means to rapidly identify and optimize synthesis conditions for the formation of high quality single crystals. Using this automated approach, a total of 1928 metal halide perovskite synthesis reactions were conducted using six organic ammonium cations (methylammonium, ethylammonium, n-butylammonium, formamidinium, guanidinium, and acetamidinium), increasing the number of metal halide perovskite materials accessible by ITC syntheses by three and resulting in the formation of a new phase, [C<sub>2</sub>H<sub>7</sub>N<sub>2</sub>][PbI<sub>3</sub>]. This comprehensive dataset allows for a statistical quantification of the total experimental space and of the likelihood of large single crystal formation. Moreover, this dataset enables the construction and evaluation of machine learning models for predicting crystal formation conditions. This work is a proof-of-concept that combining high throughput experimentation and machine learning accelerates and enhances the study of metal halide perovskite crystallization. This approach is designed to be generalizable to different synthetic routes for the acceleration of materials discovery.

scholarly journals Retrograde solubility of formamidinium and methylammonium lead halide perovskites enabling rapid single crystal growth

2015 ◽  
Vol 51 (100) ◽  
pp. 17658-17661 ◽  
Author(s):  
Makhsud I. Saidaminov ◽  
Ahmed L. Abdelhady ◽  
Giacomo Maculan ◽  
Osman M. Bakr
Keyword(s):  
Crystal Growth ◽  
Single Crystal ◽  
Single Crystal Growth ◽  
Inverse Temperature ◽  
Retrograde Solubility ◽  
Halide Perovskites ◽  
The Right ◽  
Lead Halide ◽  
Temperature Crystallization

Based on the right choice of solvent(s), the retrograde solubility of hybrid perovskites can be achieved enabling rapid inverse temperature crystallization.

scholarly journals Enhanced photosensitive properties of single-crystal formamidinium lead bromide iodine (FAPbBr2I) based photodetector

2022 ◽  
Author(s):  
Ramashanker Gupta ◽  
Vinay Gupta ◽  
Ram Datt ◽  
Sandeep Arya ◽  
Animesh Pandey ◽  
...  
Keyword(s):  
Single Crystal ◽  
Structural Characterization ◽  
Inverse Temperature ◽  
Crystallization Method ◽  
Lead Bromide ◽  
Halide Perovskite ◽  
Temperature Crystallization

In this work, the growth of formamidinium (FA) based mixed halide perovskite single-crystal via inverse temperature crystallization method is investigated and characterized to detect its photosensitive properties. The structural characterization...

The observation of defects on (100) CdTe surfaces by chemical etching

1992 ◽  
Vol 50 (2) ◽  
pp. 1424-1425
Author(s):  
M.E. Lee
Keyword(s):  
Single Crystal ◽  
Grain Boundaries ◽  
Single Crystals ◽  
Chemical Etching ◽  
Crystalline Perfection ◽  
Crystalline Defects ◽  
High Incidence ◽  
Crystallographic Defects ◽  
Cdznte Substrates ◽  
Device Technology

The crystalline perfection of bulk CdTe substrates plays an important role in their use in infrared device technology. The application of chemical etchants to determine crystal polarity or the density and distribution of crystallographic defects in (100) CdTe is not well understood. The lack of data on (100) CdTe surfaces is a result of the apparent difficulty in growing (100) CdTe single crystal substrates which is caused by a high incidence of twinning. Many etchants have been reported to predict polarity on one or both (111) CdTe planes but are considered to be unsuitable as defect etchants. An etchant reported recently has been considered to be a true defect etchant for CdTe, MCT and CdZnTe substrates. This etchant has been reported to reveal crystalline defects such as dislocations, grain boundaries and inclusions in (110) and (111) CdTe. In this study the effect of this new etchant on (100) CdTe surfaces is investigated.The single crystals used in this study were (100) CdTe as-cut slices (1mm thickness) from Bridgman-grown ingots.

Room-temperature synthesis, growth mechanisms and opto-electronic properties of organic–inorganic halide perovskite CH3NH3PbX3 (X = I, Br, and Cl) single crystals

CrystEngComm ◽  
2021 ◽  
Author(s):  
Maryam Bari ◽  
Hua Wu ◽  
Alexei A. Bokov ◽  
Rana Faryad Ali ◽  
Hamel N. Tailor ◽  
...  
Keyword(s):  
Electronic Properties ◽  
Single Crystals ◽  
Room Temperature ◽  
Solubility Curve ◽  
Inverse Temperature ◽  
Growth Mechanisms ◽  
Temperature Synthesis ◽  
Room Temperature Synthesis ◽  
Halide Perovskite ◽  
Temperature Crystallization

Growth of MAPbX3 (X = I, Br, and Cl) single crystals by room temperature crystallization (RTC) method, and the crystallization pathway illustrated by the solubility curve of MAPbCl3 in DMSO, compared with inverse temperature crystallization (ITC) method.

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