Inorganic Halide Perovskites for Efficient Light-Emitting Diodes

Yantara, Natalia; Bhaumik, Saikat; Yan, Fei; Sabba, Dharani; Dewi, Herlina Arianita; Mathews, Nripan; Boix, Pablo P.; Demir, Hilmi Volkan; Mhaisalkar, Subodh

doi:10.1021/acs.jpclett.5b02011

Cited by 488 publications

(418 citation statements)

References 27 publications

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“…21,28,29 Apart from using organic anions, several more recent reports employed Csbased all-inorganic halide perovskites to make use of their better thermal stability. 30,31 Apart from lead-based perovskites, tin-based perovskites have also been used to make light-emitting diodes. 32,33 Preparing films directly from precursor solution offers the advantage of simplicity.…”

Section: Introductionmentioning

confidence: 99%

Research Update: Challenges for high-efficiency hybrid lead-halide perovskite LEDs and the path towards electrically pumped lasing

Price

Deschler

2016

APL Materials

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Hybrid lead-halide perovskites have emerged as promising solution-processed semiconductor materials for thin-film optoelectronics. In this review, we discuss current challenges in perovskite LED performance, using thin-film and nano-crystalline perovskite as emitter layers, and look at device performance and stability. Fabrication of electrically pumped, optical-feedback devices with hybrid lead halide perovskites as gain medium is a future challenge, initiated by the demonstration of optically pumped lasing structures with low gain thresholds. We explain the material parameters affecting optical gain in perovskites and discuss the challenges towards electrically pumped perovskite lasers.

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Section: Introductionmentioning

confidence: 99%

Research Update: Challenges for high-efficiency hybrid lead-halide perovskite LEDs and the path towards electrically pumped lasing

Price

Deschler

2016

APL Materials

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“…[11][12][13] Among the previous research works, hybrid lead halide perovskites have been used in many fields, such as solar cells, 1,2,5,8,9,14 light-emitting diodes, [15][16][17][18][19] sensitive photodetectors, [20][21][22] and lasers. 4,23,24 It is necessary to mention about the photovoltaic applications, which is a very hot research topic recently, that the latest reported power conversion efficiency has been increased remarkably from the original 3.8% (Ref.…”

mentioning

confidence: 99%

Reversible air-induced optical and electrical modulation of methylammonium lead bromide (MAPbBr3) single crystals

Zhang

Liu

et al. 2017

Applied Physics Letters

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The photoluminescence (PL) variations of organic-inorganic hybrid lead halide perovskites in different atmospheres are well documented, while the fundamental mechanism still lacks comprehensive understandings. This study reports the reversible optical and electrical properties of methylammonium lead bromide (MAPbBr3 or CH3NH3PbBr3) single crystals caused by air infiltration. With the change in the surrounding atmosphere from air to vacuum, the PL intensity of perovskite single crystals decreases, while the conductivity increases. By means of first-principles computational studies, the shallow trap states are considered as key elements in PL and conductivity changes. These results have important implications for the characterization and application of organic-inorganic hybrid lead halide perovskites in vacuum.

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“…These works demonstrated that pure perovskites can emit bright EL with very high color purity at RT. Many subsequent studies used a variety of experimental approaches to improve the luminescence efficiencies of PeLEDs (8)(9)(10)(49)(50)(51)(52)(53)(54)(55)(56)(57)(58)(59)(60)(61)(62)(63)(64)(65)(66).…”

Section: Renaissance Of Perovskite Emitters: Bulk Polycrystalline Filmentioning

confidence: 99%

“…Although a uniform morphology can be achieved by using various strategies described above, the luminescent property of perovskite films can be further improved by controlling the precursor ratio (10,57). The use of MABr-rich MAPbBr 3 solutions resulted in significantly enhanced EQE and luminance, because slightly excess MABr made well-matching stoichiometry and prevented the formation of metallic Pb atoms that strongly quench luminescence (10).…”

Section: Renaissance Of Perovskite Emitters: Bulk Polycrystalline Filmentioning

confidence: 99%

Metal halide perovskite light emitters

Kim

Cho

Lee

2016

Proc. Natl. Acad. Sci. U.S.A.

475

429

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Twenty years after layer-type metal halide perovskites were successfully developed, 3D metal halide perovskites (shortly, perovskites) were recently rediscovered and are attracting multidisciplinary interest from physicists, chemists, and material engineers. Perovskites have a crystal structure composed of five atoms per unit cell (ABX 3 ) with cation A positioned at a corner, metal cation B at the center, and halide anion X at the center of six planes and unique optoelectronic properties determined by the crystal structure. Because of very narrow spectra (full width at half-maximum ≤20 nm), which are insensitive to the crystallite/grain/particle dimension and wide wavelength range (400 nm ≤ λ ≤ 780 nm), perovskites are expected to be promising high-color purity light emitters that overcome inherent problems of conventional organic and inorganic quantum dot emitters. Within the last 2 y, perovskites have already demonstrated their great potential in light-emitting diodes by showing high electroluminescence efficiency comparable to those of organic and quantum dot light-emitting diodes. This article reviews the progress of perovskite emitters in two directions of bulk perovskite polycrystalline films and perovskite nanoparticles, describes current challenges, and suggests future research directions for researchers to encourage them to collaborate and to make a synergetic effect in this rapidly emerging multidisciplinary field.As human civilization went through the information revolution, display technology has been designated as a core technology to increase convenience in daily human life. In an information society, the desire of humans to see the materials more vividly in displays has significantly increased. In this aspect, major trend of the display technology is changing from high resolution and high efficiency to high color purity for realizing vivid natural colors (Fig. 1). Therefore, research on new emitting materials that can emit light with narrow full width at halfmaximum (FWHM) have been attempted. Inorganic quantum dot (QD) emitters with narrow spectra (FWHM ∼30 nm) have been significantly studied following organic emitters (FWHM >40 nm); however, size-sensitive color purity, difficult size uniformity control, and expensive material costs of inorganic QD emitters retard the progress for wide use in industry. Therefore, new emitters with size-insensitively high color purity (FWHM <20 nm) and low material cost should be developed. Among many candidates, metal halide perovskites (hereafter, "perovskites") have gained great attentions and shown the possibility for future high-color purity emitters.The first perovskites were layer-type thin films (A 2 MX 4 ) (A = organic cation; M = divalent metal; X = Cl, Br, I) (1-6).They were expected to be novel hybrid materials that had both advantages of organic materials (e.g., solution processability and low material costs) and inorganic materials (e.g., high charge carrier mobility) (7). Especially, perovskites with high color purity, easy wavelength tuning, and ...

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Inorganic Halide Perovskites for Efficient Light-Emitting Diodes

Cited by 488 publications

References 27 publications

Research Update: Challenges for high-efficiency hybrid lead-halide perovskite LEDs and the path towards electrically pumped lasing

Research Update: Challenges for high-efficiency hybrid lead-halide perovskite LEDs and the path towards electrically pumped lasing

Reversible air-induced optical and electrical modulation of methylammonium lead bromide (MAPbBr3) single crystals

Metal halide perovskite light emitters

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