scholarly journals Coherent single-photon emission from colloidal lead halide perovskite quantum dots

Science ◽  
2019 ◽  
Vol 363 (6431) ◽  
pp. 1068-1072 ◽  
Author(s):  
Hendrik Utzat ◽  
Weiwei Sun ◽  
Alexander E. K. Kaplan ◽  
Franziska Krieg ◽  
Matthias Ginterseder ◽  
...  
Keyword(s):  
Quantum Dots ◽  
Single Photon ◽  
Photon Emission ◽  
Building Blocks ◽  
Single Photon Emission ◽  
Starting Point ◽  
Perovskite Quantum Dots ◽  
Halide Perovskite ◽  
Colloidal Lead ◽  
Lead Halide

Chemically made colloidal semiconductor quantum dots have long been proposed as scalable and color-tunable single emitters in quantum optics, but they have typically suffered from prohibitively incoherent emission. We now demonstrate that individual colloidal lead halide perovskite quantum dots (PQDs) display highly efficient single-photon emission with optical coherence times as long as 80 picoseconds, an appreciable fraction of their 210-picosecond radiative lifetimes. These measurements suggest that PQDs should be explored as building blocks in sources of indistinguishable single photons and entangled photon pairs. Our results present a starting point for the rational design of lead halide perovskite–based quantum emitters that have fast emission, wide spectral tunability, and scalable production and that benefit from the hybrid integration with nanophotonic components that has been demonstrated for colloidal materials.

On the determination of absorption cross section of colloidal lead halide perovskite quantum dots

2019 ◽  
Vol 151 (15) ◽  
pp. 154706 ◽  
Author(s):  
Joseph Puthenpurayil ◽  
Oscar Hsu-Cheng Cheng ◽  
Tian Qiao ◽  
Daniel Rossi ◽  
Dong Hee Son
Keyword(s):  
Quantum Dots ◽  
Cross Section ◽  
Absorption Cross Section ◽  
Absorption Cross ◽  
Perovskite Quantum Dots ◽  
Halide Perovskite ◽  
Colloidal Lead ◽  
Lead Halide

Polysalt ligands achieve higher quantum yield and improved colloidal stability for CsPbBr3 quantum dots

Nanoscale ◽  
2021 ◽  
Author(s):  
Sisi Wang ◽  
Liang Du ◽  
Selin Donmez ◽  
Yan Xin ◽  
Hedi Mattoussi
Keyword(s):  
Quantum Dots ◽  
Quantum Yield ◽  
Colloidal Stability ◽  
Semiconductor Nanocrystals ◽  
Perovskite Quantum Dots ◽  
Halide Perovskite ◽  
Colloidal Lead ◽  
Optoelectronic Applications ◽  
Cspbbr3 Quantum Dots ◽  
Lead Halide

Colloidal lead halide perovskite quantum dots (PQDs) are relatively new semiconductor nanocrystals with great potential for use in optoelectronic applications.

scholarly journals Thermal stability of emission from single InGaAs/GaAs quantum dots at the telecom O-band

2020 ◽  
Vol 10 (1) ◽  
Author(s):  
Paweł Holewa ◽  
Marek Burakowski ◽  
Anna Musiał ◽  
Nicole Srocka ◽  
David Quandt ◽  
...  
Keyword(s):  
Thermal Stability ◽  
Quantum Dots ◽  
Elevated Temperatures ◽  
Single Photon ◽  
Photon Emission ◽  
Building Blocks ◽  
Single Photon Emission ◽  
Vapour Phase Epitaxy ◽  
Photon Sources ◽  
Thermal Stability Of

AbstractSingle-photon sources are key building blocks in most of the emerging secure telecommunication and quantum information processing schemes. Semiconductor quantum dots (QD) have been proven to be the most prospective candidates. However, their practical use in fiber-based quantum communication depends heavily on the possibility of operation in the telecom bands and at temperatures not requiring extensive cryogenic systems. In this paper we present a temperature-dependent study on single QD emission and single-photon emission from metalorganic vapour-phase epitaxy-grown InGaAs/GaAs QDs emitting in the telecom O-band at 1.3 μm. Micro-photoluminescence studies reveal that trapped holes in the vicinity of a QD act as reservoir of carriers that can be exploited to enhance photoluminescence from trion states observed at elevated temperatures up to at least 80 K. The luminescence quenching is mainly related to the promotion of holes to higher states in the valence band and this aspect must be primarily addressed in order to further increase the thermal stability of emission. Photon autocorrelation measurements yield single-photon emission with a purity of $${g}_{50K}^{(2)}\left(0\right)=0.13$$ g 50 K ( 2 ) 0 = 0.13 up to 50 K. Our results imply that these nanostructures are very promising candidates for single-photon sources at elevated (e.g., Stirling cryocooler compatible) temperatures in the telecom O-band and highlight means for improvements in their performance.

Organic–Inorganic FAPbBr3 Perovskite Quantum Dots as a Quantum Light Source: Single-Photon Emission and Blinking Behaviors

ACS Photonics ◽  
2018 ◽  
Vol 5 (12) ◽  
pp. 4937-4943 ◽  
Author(s):  
Cong Tai Trinh ◽  
Duong Nguyen Minh ◽  
Kwang Jun Ahn ◽  
Youngjong Kang ◽  
Kwang-Geol Lee
Keyword(s):  
Quantum Dots ◽  
Light Source ◽  
Single Photon ◽  
Photon Emission ◽  
Single Photon Emission ◽  
Perovskite Quantum Dots ◽  
Quantum Light Source

scholarly journals Single Cesium Lead Halide Perovskite Nanocrystals at Low Temperature: Fast Single-Photon Emission, Reduced Blinking, and Exciton Fine Structure

ACS Nano ◽  
2016 ◽  
Vol 10 (2) ◽  
pp. 2485-2490 ◽  
Author(s):  
Gabriele Rainò ◽  
Georgian Nedelcu ◽  
Loredana Protesescu ◽  
Maryna I. Bodnarchuk ◽  
Maksym V. Kovalenko ◽  
...  
Keyword(s):  
Fine Structure ◽  
Low Temperature ◽  
Single Photon ◽  
Photon Emission ◽  
Single Photon Emission ◽  
Perovskite Nanocrystals ◽  
Halide Perovskite ◽  
Lead Halide

Room temperature single-photon emission and lasing for all-inorganic colloidal perovskite quantum dots

Nano Energy ◽  
2016 ◽  
Vol 28 ◽  
pp. 462-468 ◽  
Author(s):  
Xiaosheng Tang ◽  
Zhiping Hu ◽  
Weiwei Chen ◽  
Xin Xing ◽  
Zhigang Zang ◽  
...  
Keyword(s):  
Quantum Dots ◽  
Room Temperature ◽  
Single Photon ◽  
Photon Emission ◽  
Single Photon Emission ◽  
Perovskite Quantum Dots

Room Temperature Single-Photon Emission from Individual Perovskite Quantum Dots

ACS Nano ◽  
2015 ◽  
Vol 9 (10) ◽  
pp. 10386-10393 ◽  
Author(s):  
Young-Shin Park ◽  
Shaojun Guo ◽  
Nikolay S. Makarov ◽  
Victor I. Klimov
Keyword(s):  
Quantum Dots ◽  
Room Temperature ◽  
Single Photon ◽  
Photon Emission ◽  
Single Photon Emission ◽  
Perovskite Quantum Dots

Burstein-Moss shift of lead halide perovskite quantum dots induced by electron injection from graphene oxide

2021 ◽  
Vol 545 ◽  
pp. 149003
Author(s):  
Shengnan Ni ◽  
Haijun Qin ◽  
Jianfeng Wen ◽  
Xinyu Li ◽  
Ming Li ◽  
...  
Keyword(s):  
Quantum Dots ◽  
Graphene Oxide ◽  
Electron Injection ◽  
Perovskite Quantum Dots ◽  
Halide Perovskite ◽  
Lead Halide

Heterogeneous Post-Passivation of Inorganic Cesium Lead Halide Perovskite Quantum Dots for Efficient Electroluminescent Devices

2021 ◽  
Author(s):  
Xuefei Li ◽  
Qingqing Yang ◽  
Liuqing Yang ◽  
Shumeng Wang ◽  
Junqiao Ding ◽  
...  
Keyword(s):  
Quantum Dots ◽  
Electroluminescent Devices ◽  
Perovskite Quantum Dots ◽  
Halide Perovskite ◽  
Lead Halide

A heterogeneous post-passivation has been demonstrated by using formamidiniu bromide (FABr) to compensate the surface bromo vacancy of inorganic cesium lead halide perovskite quantum dots (QDs). Benefitting from its limited...

Thermally Stable Copper(II)-Doped Cesium Lead Halide Perovskite Quantum Dots with Strong Blue Emission

2019 ◽  
Vol 10 (5) ◽  
pp. 943-952 ◽  
Author(s):  
Chenghao Bi ◽  
Shixun Wang ◽  
Qiang Li ◽  
Stephen V. Kershaw ◽  
Jianjun Tian ◽  
...  
Keyword(s):  
Quantum Dots ◽  
Blue Emission ◽  
Thermally Stable ◽  
Perovskite Quantum Dots ◽  
Strong Blue Emission ◽  
Halide Perovskite ◽  
Lead Halide
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