Pressure-Driven Reverse Intersystem Crossing: New Path toward Bright Deep-Blue Emission of Lead-Free Halide Double Perovskites

2021 ◽  
Vol 143 (37) ◽  
pp. 15176-15184
Author(s):  
Zhiwei Ma ◽  
Qian Li ◽  
Jiajun Luo ◽  
Shunran Li ◽  
Laizhi Sui ◽  
...  
Keyword(s):  
Blue Emission ◽  
Lead Free ◽  
Intersystem Crossing ◽  
Double Perovskites ◽  
Deep Blue ◽  
Pressure Driven

Stable Deep Blue Emission with Unity Quantum Yield in Organic-Inorganic Halide Perovskite 2D Nanosheets Doped with Cerium and Terbium at High Concentrations

2021 ◽  
Author(s):  
Sumaiya Parveen ◽  
Ponnappa Kechanda Prasanna ◽  
Sudip Chakraborty ◽  
Pravat K. Giri
Keyword(s):  
Quantum Yield ◽  
Blue Emission ◽  
Lead Free ◽  
Deep Blue ◽  
Halide Perovskite ◽  
High Concentrations ◽  
Novel Strategy ◽  
2D Nanosheets

Despite recent efforts, achieving stable deep blue emission with near unity quantum yield from lead-free perovskite has remained a great challenge. Herein, we have developed a novel strategy to achieve...

First-principles study of lead-free double perovskites Rb2TeX6 (X = Cl, Br, and I) for solar cells and renewable energy

2021 ◽  
Vol 266 ◽  
pp. 115064
Author(s):  
Q. Mahmood ◽  
M.H. Alhossainy ◽  
M.S. Rashid ◽  
Tahani H. Flemban ◽  
Hind Althib ◽  
...  
Keyword(s):  
Renewable Energy ◽  
Solar Cells ◽  
First Principles ◽  
Lead Free ◽  
Double Perovskites ◽  
First Principles Study

New lead‐free double perovskites X 2 GeI 6 (X = K, Rb, Cs) for solar cells, and renewable energy as an alternate of hybrid perovskites

2021 ◽  
Author(s):  
Tahani I. Al‐Muhimeed ◽  
Aamar Shafique ◽  
Abeer A. AlObaid ◽  
Manal Morsi ◽  
Ghazanfar Nazir ◽  
...  
Keyword(s):  
Renewable Energy ◽  
Solar Cells ◽  
Lead Free ◽  
Double Perovskites

scholarly journals Enhanced Crystallinity and Luminescence Characteristics of Hexagonal Boron Nitride Doped with Cerium Ions According to Tempering Temperatures

Materials ◽  
2021 ◽  
Vol 14 (1) ◽  
pp. 193
Author(s):  
Jae Yong Jung ◽  
Juna Kim ◽  
Yang Do Kim ◽  
Young-Kuk Kim ◽  
Hee-Ryoung Cha ◽  
...  
Keyword(s):  
Rare Earth ◽  
Boron Nitride ◽  
Uv Light ◽  
Hexagonal Boron Nitride ◽  
Heating Temperature ◽  
Blue Emission ◽  
Deep Blue ◽  
Cerium Ion ◽  
Luminescence Characteristics ◽  
Enhanced Crystallinity

Hexagonal boron nitride was synthesized by pyrolysis using boric acid and melamine. At this time, to impart luminescence, rare earth cerium ions were added to synthesize hexagonal boron nitride nanophosphor particles exhibiting deep blue emission. To investigate the changes in crystallinity and luminescence according to the re-heating temperature, samples which had been subjected to pyrolysis at 900 °C were subjected to re-heating from 1100 °C to 1400 °C. Crystallinity and luminescence were enhanced according to changes in the reheating temperature. The synthesized cerium ion-doped hexagonal boron nitride nanoparticle phosphor was applied to the anti-counterfeiting field to prepare an ink that can only be identified under UV light.

Lead-free halide double perovskites: Toward stable and sustainable optoelectronic devices

2021 ◽  
Author(s):  
Asia Bibi ◽  
Ilgeum Lee ◽  
Yoonseo Nah ◽  
Omar Allam ◽  
Heejun Kim ◽  
...  
Keyword(s):  
Optoelectronic Devices ◽  
Lead Free ◽  
Double Perovskites

Ab-initio study of lead-free double Perovskites Cs2AgZBr6 (Z = Bi, Sb) for Solar cells and other renewable energy applications

2022 ◽  
Vol 306 ◽  
pp. 122781
Author(s):  
Muhammad Waqas Mukhtar ◽  
M. Ramzan ◽  
Muhammad Rashid ◽  
Altaf Hussain ◽  
Muhammad Imran ◽  
...  
Keyword(s):  
Renewable Energy ◽  
Solar Cells ◽  
Ab Initio ◽  
Lead Free ◽  
Double Perovskites ◽  
Ab Initio Study ◽  
Energy Applications

scholarly journals Lead-Free Halide Double Perovskites: A Review of the Structural, Optical, and Stability Properties as Well as Their Viability to Replace Lead Halide Perovskites

Metals ◽  
2018 ◽  
Vol 8 (9) ◽  
pp. 667 ◽  
Author(s):  
Edson Meyer ◽  
Dorcas Mutukwa ◽  
Nyengerai Zingwe ◽  
Raymond Taziwa
Keyword(s):  
Solar Cells ◽  
Perovskite Solar Cells ◽  
Lead Free ◽  
Double Perovskites ◽  
Stability Properties ◽  
Perovskite Materials ◽  
Halide Perovskites ◽  
Halide Perovskite ◽  
Light Absorbers ◽  
Lead Halide

Perovskite solar cells employ lead halide perovskite materials as light absorbers. These perovskite materials have shown exceptional optoelectronic properties, making perovskite solar cells a fast-growing solar technology. Perovskite solar cells have achieved a record efficiency of over 20%, which has superseded the efficiency of Gräztel dye-sensitized solar cell (DSSC) technology. Even with their exceptional optical and electric properties, lead halide perovskites suffer from poor stability. They degrade when exposed to moisture, heat, and UV radiation, which has hindered their commercialization. Moreover, halide perovskite materials consist of lead, which is toxic. Thus, exposure to these materials leads to detrimental effects on human health. Halide double perovskites with A2B′B″X6 (A = Cs, MA; B′ = Bi, Sb; B″ = Cu, Ag, and X = Cl, Br, I) have been investigated as potential replacements of lead halide perovskites. This work focuses on providing a detailed review of the structural, optical, and stability properties of these proposed perovskites as well as their viability to replace lead halide perovskites. The triumphs and challenges of the proposed lead-free A2B′B″X6 double perovskites are discussed here in detail.

High performance full color OLEDs based on a class of molecules with dual carrier transport channels and small singlet–triplet splitting

2015 ◽  
Vol 51 (53) ◽  
pp. 10632-10635 ◽  
Author(s):  
Chenglong Li ◽  
Shipan Wang ◽  
Weiping Chen ◽  
Jinbei Wei ◽  
Guochun Yang ◽  
...  
Keyword(s):  
High Performance ◽  
Carrier Transport ◽  
Blue Emission ◽  
Deep Blue ◽  
Full Color ◽  
Triplet Splitting ◽  
Transport Channels

The strong deep blue emission, good ambipolar carrier transport and small singlet–triplet splitting characteristics allow PPI-PPITPA and PPI-PPIPCz as emitting materials and hosts to fabricate high performance full color OLEDs.

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