Fourier imaging microscopy of light-emitting hybrid perovskite nanostructures

2020 ◽  
Author(s):  
Ravi P. N. Tripathi ◽  
Bibek S. Dhami ◽  
Kannatassen Appavoo
Keyword(s):  
Light Emitting ◽  
Hybrid Perovskite ◽  
Fourier Imaging

scholarly journals Recent Advances and Challenges in Halide Perovskite Crystals in Optoelectronic Devices from Solar Cells to Other Applications

Crystals ◽  
2020 ◽  
Vol 11 (1) ◽  
pp. 39
Author(s):  
Seunghyun Rhee ◽  
Kunsik An ◽  
Kyung-Tae Kang
Keyword(s):  
Solar Cells ◽  
Optoelectronic Devices ◽  
Charge Carrier Mobility ◽  
Light Emitting ◽  
Fundamental Properties ◽  
Perovskite Materials ◽  
Hybrid Perovskite ◽  
Band Position ◽  
Different Characteristics ◽  
High Charge Carrier Mobility

Organic-inorganic hybrid perovskite materials have attracted tremendous attention as a key material in various optoelectronic devices. Distinctive optoelectronic properties, such as a tunable energy band position, long carrier diffusion lengths, and high charge carrier mobility, have allowed rapid progress in various perovskite-based optoelectronic devices (solar cells, photodetectors, light emitting diodes (LEDs), and lasers). Interestingly, the developments of each field are based on different characteristics of perovskite materials which are suitable for their own applications. In this review, we provide the fundamental properties of perovskite materials and categorize the usages in various optoelectronic applications. In addition, the prerequisite factors for those applications are suggested to understand the recent progress of perovskite-based optoelectronic devices and the challenges that need to be solved for commercialization.

Effects of thermal treatment on organic-inorganic hybrid perovskite films and luminous efficiency of light-emitting diodes

2016 ◽  
Vol 16 (9) ◽  
pp. 1069-1074 ◽  
Author(s):  
Young-Hoon Kim ◽  
Himchan Cho ◽  
Jin Hyuck Heo ◽  
Sang Hyuk Im ◽  
Tae-Woo Lee
Keyword(s):  
Thermal Treatment ◽  
Light Emitting Diodes ◽  
Luminous Efficiency ◽  
Inorganic Hybrid ◽  
Light Emitting ◽  
Hybrid Perovskite

scholarly journals Highly stable hybrid perovskite light-emitting diodes based on Dion-Jacobson structure

2019 ◽  
Vol 5 (8) ◽  
pp. eaaw8072 ◽  
Author(s):  
Yuequn Shang ◽  
Yuan Liao ◽  
Qi Wei ◽  
Ziyu Wang ◽  
Bo Xiang ◽  
...  
Keyword(s):  
Light Emitting Diodes ◽  
First Principles Calculations ◽  
Bridging Ligands ◽  
Inorganic Hybrid ◽  
Light Emitting ◽  
Hybrid Perovskite ◽  
Halide Perovskites ◽  
Stable Hybrid ◽  
Poor Stability

Organic-inorganic hybrid halide perovskites are emerging as promising materials for next-generation light-emitting diodes (LEDs). However, the poor stability of these materials has been the main obstacle challenging their application. Here, we performed first-principles calculations, revealing that the molecule dissociation energy of Dion-Jacobson (DJ) structure using 1,4-bis(aminomethyl)benzene molecules as bridging ligands is two times higher than the typical Ruddlesden-Popper (RP) structure based on phenylethylammonium ligands. Accordingly, LEDs based on the DJ structure show a half-lifetime over 100 hours, which is almost two orders of magnitude longer compared with those based on RP structural quasi–two-dimensional perovskite. To the best of our knowledge, this is the longest lifetime reported for all organic-inorganic hybrid perovskites operating at the current density, giving the highest external quantum efficiency (EQE) value. In situ tracking of the film composition in operation indicates that the DJ structure was maintained well after continuous operation under an electric field.

scholarly journals Recent Progress in Emerging Near-Infrared Emitting Materials for Light-Emitting Diode Applications

2020 ◽  
Vol 02 (04) ◽  
pp. 253-281
Author(s):  
Yingqi Zheng ◽  
Xiaozhang Zhu
Keyword(s):  
Near Infrared ◽  
High Efficiency ◽  
Light Emitting Diode ◽  
Night Vision ◽  
Materials Development ◽  
Light Emitting ◽  
Advantages And Disadvantages ◽  
Perovskite Materials ◽  
Hybrid Perovskite ◽  
Materials Used

In view of the wide applications of near-infrared (NIR) light in night vision, security, medicine, sensors, telecommunications, and military applications, and the scarcity of high-efficiency NIR-emitting materials, development of alternative NIR-emitting materials is urgently required. In this review, we focus on three kinds of emerging NIR-emitting materials used in light-emitting diodes (LEDs), namely organic materials, inorganic quantum dot (QD) materials, and organic–inorganic hybrid perovskite materials; the corresponding devices are organic LEDs, QD LEDs, and perovskite LEDs. The advantages and disadvantages of the three kinds of materials are discussed, some representative works are reviewed, and a brief outlook for these materials is provided.

Green light-emitting diodes based on hybrid perovskite films with mixed cesium and methylammonium cations

Nano Research ◽  
2017 ◽  
Vol 10 (4) ◽  
pp. 1329-1335 ◽  
Author(s):  
Junjie Si ◽  
Yang Liu ◽  
Nana Wang ◽  
Meng Xu ◽  
Jing Li ◽  
...  
Keyword(s):  
Light Emitting Diodes ◽  
Green Light ◽  
Light Emitting ◽  
Hybrid Perovskite

scholarly journals Optical Energy Losses in Organic-Inorganic Hybrid Perovskite Light-Emitting Diodes

2018 ◽  
Vol 6 (17) ◽  
pp. 1800667 ◽  
Author(s):  
Xiao-Bo Shi ◽  
Yuan Liu ◽  
Zhongcheng Yuan ◽  
Xiao-Ke Liu ◽  
Yanfeng Miao ◽  
...  
Keyword(s):  
Light Emitting Diodes ◽  
Energy Losses ◽  
Inorganic Hybrid ◽  
Optical Energy ◽  
Light Emitting ◽  
Hybrid Perovskite

scholarly journals Single Crystal Hybrid Perovskite Optoelectronics: Progress and Perspectives

2020 ◽  
Author(s):  
Feng LI
Keyword(s):  
Single Crystals ◽  
Carrier Transport ◽  
Research Attention ◽  
Light Emitting ◽  
Practical Applications ◽  
New Class ◽  
Hybrid Perovskite ◽  
Device Applications ◽  
Perovskite Crystal ◽  
Higher Carrier Mobility

Organic–inorganic hybrid perovskites, which combine the superior optical and electronic properties and solution-processed manufacturing, have emerged as a new class of revolutionary optoelectronic devices with the potential for various practical applications. Encouraged by the advantages of longer carrier diffusion length, higher carrier mobility and lower trap densities as compared to the polycrystalline counterparts’, increasing research attention has focused on preparation and optimization of perovskite crystal candidates, via using various facile growth techniques, for the development of a wide range of optoelectronic applications. This chapter presents a comprehensive review of recent advances in the field of optoelectronic technologies based on different forms of single crystals, including bulk crystals and thin ones, with emphasis placed on the optimization of crystals and the relationship among the charge-carrier transport, operation mechanism, device architecture, and device performance. First, we introduce the main methods used to prepare bulk and thin single crystals, and analyze several aspects of their properties. Thereafter, the applications of single crystals into solar cells, photodetectors, light-emitting diodes, and lasers, are discussed in depth. Finally, we summarize the challenges of perovskite single crystals and propose further improvements in the synthesis approaches and device applications.

scholarly journals Organic–inorganic hybrid perovskite quantum dot light-emitting diodes using a graphene electrode and modified PEDOT:PSS

RSC Advances ◽  
2019 ◽  
Vol 9 (36) ◽  
pp. 20931-20940 ◽  
Author(s):  
Qing Zhang ◽  
Hongtao Yu ◽  
Ziwei Liu ◽  
Yao Lu ◽  
Danqing Ye ◽  
...  
Keyword(s):  
Quantum Dot ◽  
Light Emitting Diodes ◽  
Device Performance ◽  
Inorganic Hybrid ◽  
Light Emitting ◽  
Graphene Electrode ◽  
Hybrid Perovskite

A graphene electrode together with modified PEDOT:PSS was first applied into perovskite quantum dot light-emitting diodes to improve the device performance.

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