Synthesis Al complex and investigating effect of doped ZnO nanoparticles in the electrical and optical efficiency of OLEDS

Shahedi, Zahra; Jafari, Mohammad Reza

doi:10.1007/s00339-016-0715-2

Cited by 12 publications

(2 citation statements)

References 31 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Indeed, we have demonstrated that this Gaq3@ZIF‐8 nanomaterial is stable at least for 8 months with no changes either to its crystalline structure, or to its photoluminescence properties. The Gaq3@ZIF‐8 composite exhibits a green‐yellowish luminescence similar to Ce 3+ :YAG phosphor or Alq3 complex, [ 34,35 ] with a relatively high quantum yield (≈15%) in the solid‐state form. Encouraged by these results, we have fabricated two types of proof‐of‐concept LED devices: a) down‐converter MOF‐WLED, where a 405 nm LED was coated with Gaq3@ZIF‐8, and b) a new MOF‐LED in which Gaq3@ZIF‐8 functions as the electroluminescent layer.…”

Section: Introductionmentioning

confidence: 99%

Electroluminescent Guest@MOF Nanoparticles for Thin Film Optoelectronics and Solid‐State Lighting

Gutiérrez

Martín

Auweraer

et al. 2020

Advanced Optical Materials

View full text Add to dashboard Cite

Light‐emitting diodes (LEDs) are an efficient source of lighting, with many commercial applications like general illumination, camera flashes, phone or laptop displays, and TV screens. However, they present certain limitations, including low‐quality color rendition, and the use of expensive/toxic rare‐earth elements. There is therefore an urgent need for the development of improved luminescent materials free of rare earths. Luminescent metal–organic framework (LMOF) materials are promising candidates for photonics devices. Most MOF‐LEDs reported are of the down‐converter type, where UV or blue LED are coated with LMOFs, however there is limited progress in the development of LED using LMOFs as the electroluminescent layer. Herein, it is reported a novel Guest@MOF composite synthesized by encapsulating a semiconducting Gaq3 metal complex [gallium(III) tris(8‐hydroxyquinolinato)], into the ZIF‐8 pore [Zn (2‐methylimidazolate)2], yielding a green‐yellowish luminescent material exhibiting a relatively high quantum yield of 15% upon photoexcitation. Subsequently, a down‐converter LED comprising 405‐nm violet LED coated with Gaq3@ZIF‐8, yielding a white MOF‐LED is shown. Then the use of Gaq3@ZIF‐8 as an electroluminescent layer in a hybrid‐LED, achieving an orange‐yellowish light emitting device is demonstrated. This work reveals the potential of LMOFs for next‐generation LED technology, by exploiting the Guest@MOF concept to enable electroluminescent applications.

show abstract

Section: Introductionmentioning

confidence: 99%

Electroluminescent Guest@MOF Nanoparticles for Thin Film Optoelectronics and Solid‐State Lighting

Gutiérrez

Martín

Auweraer

et al. 2020

Advanced Optical Materials

View full text Add to dashboard Cite

show abstract

“…It is possible that the doping of Al has a role in reducing the recombination of electron–hole pairs, which in turn leads to the presence of more free electrons in the CB. This, in turn, lowers electrical resistance and increases the FF value: η = V oc × J sc × FF P in …”

Section: Resultsmentioning

confidence: 99%

Bandgap Engineering and Enhancing Optoelectronic Performance of a Lead-Free Double Perovskite Cs₂AgBiBr₆ Solar Cell via Al Doping

Ullah,

Iftikhar Khan,

Ihtisham-ul-haq

et al. 2024

ACS Omega

View full text Add to dashboard Cite

In this study, solar cells based on pure Cs 2 AgBiBr 6 and Al-doped metal were fabricated using the sol−gel spin-coating technique. X-ray diffraction (XRD) analysis confirmed the formation of cubic-structured films for both pure and Al-doped. Notably, the grain size of Al-doped Cs 2 AgBiBr 6 was observed to be larger than that of its pure counterpart. The optical properties of these films were investigated using UV−vis spectroscopy, revealing essential parameters such as the bandgap energy (E g ), refractive index (n), extinction coefficients (k), and dielectric constant. While the pure film exhibited an E g of 1.91 eV, the Al-doped film demonstrated a slightly lower E g of 1.82 eV. Utilization of these films in solar cell fabrication yielded intriguing results. The J−V curve shows that the pure solar cell displayed a short-circuit current density (J sc ) of 5.01 mA/cm 2 , a fill factor (FF) of 0.67, an open-circuit voltage (V oc ) of 0.89 V, and an efficiency of 3.02%. Al doping led to improvements, with an increase in V oc to 0.91 V, FF to 0.71, and J sc to 5.29 mA/cm 2 . Consequently, the overall efficiency surged to 3.40%, marking a substantial 12.5% enhancement compared with the pure solar cell. These findings underscore the efficacy of Al doping in enhancing the performance of Cs 2 AgBiBr 6 -based solar cells.

show abstract

Manufacturing of nanoflowers crystal of ZnQ2 by a co-precipitation process and their morphology-dependent luminescence properties

Shahedi

Zare

Sediqy

2021

J Mater Sci: Mater Electron

View full text Add to dashboard Cite

Synthesis Al complex and investigating effect of doped ZnO nanoparticles in the electrical and optical efficiency of OLEDS

Cited by 12 publications

References 31 publications

Electroluminescent Guest@MOF Nanoparticles for Thin Film Optoelectronics and Solid‐State Lighting

Electroluminescent Guest@MOF Nanoparticles for Thin Film Optoelectronics and Solid‐State Lighting

Bandgap Engineering and Enhancing Optoelectronic Performance of a Lead-Free Double Perovskite Cs₂AgBiBr₆ Solar Cell via Al Doping

Manufacturing of nanoflowers crystal of ZnQ2 by a co-precipitation process and their morphology-dependent luminescence properties

Contact Info

Product

Resources

About

Synthesis Al complex and investigating effect of doped ZnO nanoparticles in the electrical and optical efficiency of OLEDS

Cited by 12 publications

References 31 publications

Electroluminescent Guest@MOF Nanoparticles for Thin Film Optoelectronics and Solid‐State Lighting

Electroluminescent Guest@MOF Nanoparticles for Thin Film Optoelectronics and Solid‐State Lighting

Bandgap Engineering and Enhancing Optoelectronic Performance of a Lead-Free Double Perovskite Cs2AgBiBr6 Solar Cell via Al Doping

Manufacturing of nanoflowers crystal of ZnQ2 by a co-precipitation process and their morphology-dependent luminescence properties

Contact Info

Product

Resources

About

Bandgap Engineering and Enhancing Optoelectronic Performance of a Lead-Free Double Perovskite Cs₂AgBiBr₆ Solar Cell via Al Doping