Electric field-modulated amplified spontaneous emission in organo-lead halide perovskite CH3NH3PbI3

Yuan, Fang; Wu, Zhaoxin; Dong, Hua; Xia, Bin; Xi, Jun; Ning, Shuya; Ma, Lin; Hou, Xun

doi:10.1063/1.4938754

Cited by 23 publications

(14 citation statements)

References 36 publications

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“…The imbalance of injected holes and electrons leads to leakage current, which results in the lower current efficiency of devices, and the dissociation of excitons under applied voltages are sure to seriously reduce the PL and ASE intensity of perovskite film . Our previous work also demonstrated the quenching of ASE intensity for the MAPbI 3 film under high external electric field . Subject to these additional losses, it is understandable for the failure of electrically pumped lasing in PeLEDs in our experiment, although the minimum current density required for lasing behaviors has been reached.…”

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confidence: 67%

“…[4] Our previous work also demonstrated the quenching of ASE intensity for the MAPbI 3 film under high external electric field. [37] Subject to these additional losses, it is understandable for the failure of electrically pumped lasing in PeLEDs in our experiment, although the minimum current density required for lasing behaviors has been reached. Like cases of organic lightemitting diodes and the lasing from the organic gain media, many efforts could be done to reduce or avoid these additional losses, such as pulsed electrical pumping of very small structures, optimized optical structure design to reduce the negative effects caused by contacts, even exploiting lightemitting transistors to avoid metal contact.…”

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confidence: 78%

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All‐Inorganic Hetero‐Structured Cesium Tin Halide Perovskite Light‐Emitting Diodes With Current Density Over 900 A cm⁻² and Its Amplified Spontaneous Emission Behaviors

Yuan

Dong

et al. 2018

Physica Rapid Research Ltrs

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Pursuing novel new materials for fabricating efficient electrically pumped lasers is the emphasis of researchers for decades. Although organic semiconductors with high gain have been reported previously, a significant challenge remains in using them for electrically pumped lasers due to their low carrier mobility. Recently, hybrid halide perovskites have been reported to possess high carrier mobility and optical gain which allows them to be used for various optoelectronic applications. To explore the feasibility of using them as possible candidates for electrically pumped lasers, tin (Sn)‐based perovskite light‐emitting diodes (PeLEDs) with all‐inorganic heterostructure are fabricated by the vapor‐deposition process. The all‐inorganic hetero‐structured PeLEDs exhibited a maximum EQE of ≈0.34%, and withstood current density up to 915 A cm−2 with small emission zone of 0.01 mm2. In addition, by vacuum vapor deposition, extremely smooth and uniform cesium tin halide perovskite films with small grain size (≈60 nm) are obtained, in which low threshold (≈7 µJ cm−2) of their amplified spontaneous emission was presented. These characteristics demonstrate the great potential of using them as gain media for electrically pumped lasers.

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confidence: 67%

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confidence: 78%

All‐Inorganic Hetero‐Structured Cesium Tin Halide Perovskite Light‐Emitting Diodes With Current Density Over 900 A cm⁻² and Its Amplified Spontaneous Emission Behaviors

Yuan

Dong

et al. 2018

Physica Rapid Research Ltrs

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“…To form a laser, a cavity is There have been some promising preliminary studies, such as achieving stimulated emission in the presence of electrically quenching contacts. 43,82 The bulk defect density of perovskites is low, and these results suggest that the surface states of common ETL and HTLs do not diminish stimulated emission efficiency in thin-films.…”

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confidence: 96%

Perovskite photonic sources

2016

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The field of solution-processed semiconductors has made great strides; however, it has yet to enable electrically-driven lasers. To achieve this goal, improved materials are required that combine efficient (> 50% quantum yield) radiative recombination under high injection, large and balanced charge carrier mobilities in excess of 1 cm 2 V-1 s-1 , and high absorption and gain coefficients exceeding 10 4 cm-1. Solid-state perovskites are-in addition to galvanizing the field of solar electricity-showing great promise in photonic sources, and may be the answer to realizing solution-cast laser diodes. Here, we discuss the properties of perovskites that benefit light emission, review recent progress in perovskite electroluminescent diodes and optically pumped lasers, and examine the remaining challenges in achieving continuous-wave and electrically-driven lasing. 2 Trihalide perovskite semiconductors are an emerging class of materials that have led to great strides in the performance of solution-processed optoelectronic devices. 1-4 The bandgap is tunable via chemical composition, allowing it to be varied across visible and near-infrared wavelengths. 5 High-quality perovskite thin films are formed at low temperature using inexpensive earth-abundant reagents. Their low Urbach energy (as small as 15 meV), 6 minimal Stokes shift (less than 20 meV), 7 high charge carrier mobility (in excess of 10 cm 2 V-1 s-1), 8 long diffusion length (up to 1 μm and beyond), 7,9-11 and low trap density (less than 10 16 cm-3) 12 have enabled rapid advances in the field of solution-processed solar cell technology. Interest in perovskites soared once photovoltaic power conversion efficiencies ascended from 6.5% to 9.7% in 2012. 13,14 These impressive efficiencies quickly put perovskites in contention with leading third-generation solar harvesting materials including dyes, 15 organic polymers, 16 colloidal quantum dots, 17 and thin-film compound chalcogenides. 18 By building upon pioneering advances in mesoscopic dye-sensitized solar cells, researchers increased the efficiency of perovskite photovoltaics dramatically over a span of less than three years. Breakthroughs in perovskite film formation, composition, and electrodes progressed efficiency to 10.9%, 19 12%, 20,21 15%, 22 18.4%, 23 20.1%, 24 and now to 21% certified. 25 Recently, researchers have explored new applications of this material, including in light-emitting diodes and in semiconductor optical amplifiers and lasers. We offer a critical evaluation of the prospects of perovskites in these important areas of application. Perovskite materials for light emission Perovskites (Figure 1a) possess the crystal structure ABX3, where A and B are cations jointly bound to X, an anion. Methylammonium (MA) lead trihalide perovskites have been the most

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“…Actually, organic‐inorganic hybrid perovskites have attracted great attentions due to their tremendous light‐harvesting ability in photovoltaic devices . Their outstanding optoelectronic properties, such as high charge carrier mobility, long carrier diffusion length of up to 175 μm, light absorption 10 times higher than organic dyes in the UV–vis range and small exciton binding energy, making perovskites a promising candidate for PD applications. For example, Yang and co‐workers fabricated the vertical‐type organic‐inorganic hybrid perovskite PD with a large detectivity of 10 14 Jones .…”

Section: Introductionmentioning

confidence: 99%

Improving All‐Inorganic Perovskite Photodetectors by Preferred Orientation and Plasmonic Effect

Dong

Zou

et al. 2016

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All-inorganic perovskites have high carrier mobility, long carrier diffusion length, excellent visible light absorption, and well overlapping with localized surface plasmon resonance (LSPR) of noble metal nanocrystals (NCs). The high-performance photodetectors can be constructed by means of the intrinsic outstanding photoelectric properties, especially plasma coupling. Here, for the first time, inorganic perovskite photodetectors are demonstrated with synergetic effect of preferred-orientation film and plasmonic with both high performance and solution process virtues, evidenced by 238% plasmonic enhancement factor and 10 on/off ratio. The CsPbBr and Au NC inks are assembled into high-quality films by centrifugal-casting and spin-coating, respectively, which lead to the low cost and solution-processed photodetectors. The remarkable near-field enhancement effect induced by the coupling between Au LSPR and CsPbBr photogenerated carriers is revealed by finite-difference time-domain simulations. The photodetector exhibits a light on/off ratio of more than 10 under 532 nm laser illumination of 4.65 mW cm . The photocurrent increases from 0.67 to 2.77 μA with centrifugal-casting. Moreover, the photocurrent rises from 245.6 to 831.1 μA with Au NCs plasma enhancement, leading to an enhancement factor of 238%, which is the most optimal report among the LSPR-enhanced photodetectors, to the best of our knowledge. The results of this study suggest that all-inorganic perovskites are promising semiconductors for high-performance solution-processed photodetectors, which can be further enhanced by Au plasmonic effect, and hence have huge potentials in optical communication, safety monitoring, and biological sensing.

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Electric field-modulated amplified spontaneous emission in organo-lead halide perovskite CH3NH3PbI3

Cited by 23 publications

References 36 publications

All‐Inorganic Hetero‐Structured Cesium Tin Halide Perovskite Light‐Emitting Diodes With Current Density Over 900 A cm⁻² and Its Amplified Spontaneous Emission Behaviors

All‐Inorganic Hetero‐Structured Cesium Tin Halide Perovskite Light‐Emitting Diodes With Current Density Over 900 A cm⁻² and Its Amplified Spontaneous Emission Behaviors

Perovskite photonic sources

Improving All‐Inorganic Perovskite Photodetectors by Preferred Orientation and Plasmonic Effect

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Electric field-modulated amplified spontaneous emission in organo-lead halide perovskite CH3NH3PbI3

Cited by 23 publications

References 36 publications

All‐Inorganic Hetero‐Structured Cesium Tin Halide Perovskite Light‐Emitting Diodes With Current Density Over 900 A cm−2 and Its Amplified Spontaneous Emission Behaviors

All‐Inorganic Hetero‐Structured Cesium Tin Halide Perovskite Light‐Emitting Diodes With Current Density Over 900 A cm−2 and Its Amplified Spontaneous Emission Behaviors

Perovskite photonic sources

Improving All‐Inorganic Perovskite Photodetectors by Preferred Orientation and Plasmonic Effect

Contact Info

Product

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All‐Inorganic Hetero‐Structured Cesium Tin Halide Perovskite Light‐Emitting Diodes With Current Density Over 900 A cm⁻² and Its Amplified Spontaneous Emission Behaviors

All‐Inorganic Hetero‐Structured Cesium Tin Halide Perovskite Light‐Emitting Diodes With Current Density Over 900 A cm⁻² and Its Amplified Spontaneous Emission Behaviors