Ultra‐Efficient and High‐Quality White Light‐Emitting Devices using Fluorescent Proteins in Aqueous Medium

Sadeghi, Sadra; Melikov, Rustamzhon; Conkar, Deniz; Fırat-Karalar, Elif Nur; Nizamoğlu, Sedat

doi:10.1002/admt.202000061

Cited by 16 publications

(15 citation statements)

References 65 publications

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“…Exploring highly luminescent materials in energy‐efficient solid‐state lighting applications has recently gained considerable interest in the context of current energy concerns. [ 1–3 ] Hybrid organic–inorganic halides (HOIHs) in particular have received significant attention to serve as promising candidates for light‐emitting diodes, photodetectors, and solar cells. [ 4–8 ] Given that the instability of 3D perovskites to external stimuli, low‐dimensional HOIHs are potentially resistant to moisture, oxidation, and photodegradation.…”

Section: Introductionmentioning

confidence: 99%

Harvesting Cool Daylight in Hybrid Organic–Inorganic Halides Microtubules through the Reservation of Pressure‐Induced Emission

et al. 2021

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Pressure‐induced emission (PIE) is extensively studied in halide perovskites or derivative hybrid halides. However, owing to the soft inorganic lattice of these materials, the intense emission is barely retained under ambient conditions, thus largely limiting their practical applications in optoelectronics at atmospheric pressure. Here, remarkably enhanced emission in microtubules of the 0D hybrid halide (C5H7N2)2ZnBr4 ((4AMP)2ZnBr4) is successfully achieved by means of pressure treatment at room temperature. Notably, the emission, which is over ten times more intense than the emission in the initial state, is retained under ambient conditions upon the complete release of pressure. Furthermore, the pressure processing enables the tuning of “sky blue light” before compression to “cool daylight” with a remarkable quantum yield of 88.52% after decompression, which is of considerable interest for applications in next‐generation lighting and displays. The irreversible electronic structural transition, induced by the steric hindrance with respect to complexly configurational organic molecules [4AMP], is highly responsible for the eventual retention of PIE and tuning of the color temperature. The findings represent a significant step toward the capture of PIE under ambient conditions, thus facilitating its potential solid‐state lighting applications.

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Section: Introductionmentioning

confidence: 99%

Harvesting Cool Daylight in Hybrid Organic–Inorganic Halides Microtubules through the Reservation of Pressure‐Induced Emission

et al. 2021

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“…In our case, the total cadmium concentration for the GB-based WLED structure is less than 1 ppm according to the inductively coupled plasma-mass spectrometry (ICP-MS) measurement results (Table S2), which are within the limits allowed by EU. The transition toward green nanomaterials such as carbon dots , and fluorescent proteins , can provide better technology in terms of environmental sustainability.…”

Section: Discussionmentioning

confidence: 99%

High-Performance White Light-Emitting Diodes over 150 lm/W Using Near-Unity-Emitting Quantum Dots in a Liquid Matrix

et al. 2022

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In the next decade, we will witness the replacement of a majority of conventional light sources with light-emitting diodes (LEDs). Efficient LEDs other than phosphors can enhance their functionality and meet different lighting needs. Quantum dots (QDs) have high potential for future LED technology due to their sensitive band-gap tuning via the quantum confinement effect and compositional control, high photoluminescence quantum yield (PLQY), and mass-production capacity. Herein, we demonstrate white LEDs using QDs that reach over 150 lumens per electrical Watt. For that we synthesized green- and red-emitting ZnCdSe/ZnSe core/shell QDs by low-temperature nucleation, high-temperature shell formation, and postsynthetic trap-state removal. Their cadmium concentration is lower than 100 ppm, satisfying the current EU RoHS regulations, and their PLQY reaches a high level of 94%. The PLQY of QDs is maintained within the device on blue LED via liquid injection, and their integration at optimized optical densities leads to 129.6 and 170.4 lm/W for red-green-blue (RGB)- and green-blue (GB)-based white LEDs, respectively. Our simulations further showed that an efficiency level of over 230 lm/W is achievable using ultraefficient blue LED pumps. The simple fabrication and high performance of white LEDs using QD liquids show high promise for next-generation lighting devices.

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“…On the other hand, the performance of Bio‐HLEDs based on red‐emitting FPs is still poor (< 50 h) compared to the green‐emitting FP counterparts (< 3,500 h), representing a critical bottleneck toward highly performing white Bio‐HLEDs. [ 22,30 ] Here, the archetypal red‐emitting FP has been mCherry, which is a monomeric β‐barrel protein structure embedding a DsRed‐like chromophore. [ 31,32 ] This FP features a narrow emission centered at 620 nm with photoluminescence quantum yields (ϕ) of ca .…”

Section: Introductionmentioning

confidence: 99%

Homopolymeric Protein Phosphors: Overpassing the Stability Frontier of Deep‐Red Bio‐Hybrid Light‐Emitting Diodes

Ferrara

Fernandéz‐Blázquez

Werner

et al. 2023

Adv Funct Materials

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Although protein-polymer phosphors are an emerging photon-management filter concept for hybrid light-emitting diodes, deep-red-emitting devices based on archetypal fluorescent proteins (FPs; mCherry) are still poorly performing with lifetimes <50 h under high photon-flux excitation and ambient conditions. Here, the challenge is two-fold: i) understanding the deactivation mechanism of red-emitting FP-polymer coatings and, in turn, ii) identifying the best polymer design for highly stable devices. This study first provides comprehensive photophysical/thermal/structural studies and device degradation (ambient/ inert) analysis, revealing the presence of photo-induced cis-trans isomerization and the effect of oxygen and water on the deactivation of mCherry in reference polymer coatings. Based on these findings, a new bio-phosphor configuration using polyvinyl alcohol derivatives, in which crystallinity and amount of trapped water (stiffness and oxygen/moisture barriers) are easily controlled by the hydroxylation degree, is successfully achieved. Compared to the prior art, these devices significantly outperform the reference stability (>50-fold enhancement), showing a brightness loss of <5% over the first 2000 h and a final device lifetime of 2600 h. Hence, this study describes a unique rationale toward designing polymers to stabilize FPs for lighting, overpassing stability frontiers in deep-red hybrid light-emitting diodes (HLEDs) going from hours to months.

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Ultra‐Efficient and High‐Quality White Light‐Emitting Devices using Fluorescent Proteins in Aqueous Medium

Cited by 16 publications

References 65 publications

Harvesting Cool Daylight in Hybrid Organic–Inorganic Halides Microtubules through the Reservation of Pressure‐Induced Emission

Harvesting Cool Daylight in Hybrid Organic–Inorganic Halides Microtubules through the Reservation of Pressure‐Induced Emission

High-Performance White Light-Emitting Diodes over 150 lm/W Using Near-Unity-Emitting Quantum Dots in a Liquid Matrix

Homopolymeric Protein Phosphors: Overpassing the Stability Frontier of Deep‐Red Bio‐Hybrid Light‐Emitting Diodes

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