High efficiency transport of quantum dots into plant roots with the aid of silwet L-77

In this study, we have synthesized the molybdenum sulfide quantum dots (MoS2 QDs) and zinc sulfide quantum dots (ZnS QDs) and demonstrated a highly efficient green phosphorescent organic light-emitting diode (OLED) with hybrid poly (3,4-ethylenedioxythiophene)/poly (styrenesulfonate) (PEDOT:PSS)/QDs hole injection layer (HIL). The electroluminescent properties of PEDOT:PSS and hybrid HIL based devices were explored. An optimized OLED based on the PEDOT:PSS/MoS2 QDs HIL exhibited maximum current efficiency (CE) of 72.7 cd A−1, which shows a 28.2% enhancement as compared to counterpart with single PEDOT:PSS HIL. The higher device performance of OLED with hybrid HIL can be attributed to the enhanced hole injection capacity and balanced charge carrier transportation in the OLED devices. The above analysis illustrates an alternative way to fabricate the high efficiency OLEDs with sulfide quantum dots as a HIL.

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Black phosphorus quantum dots as dual-functional electron-selective materials for efficient plastic perovskite solar cells

Journal of Materials Chemistry A ◽

10.1039/c8ta01408f ◽

2018 ◽

Vol 6 (19) ◽

pp. 8886-8894 ◽

Cited By ~ 27

Author(s):

Nianqing Fu ◽

Chun Huang ◽

Peng Lin ◽

Mingshan Zhu ◽

Tao Li ◽

...

Keyword(s):

Quantum Dots ◽

Solar Cells ◽

Quantum Dot ◽

High Efficiency ◽

Perovskite Solar Cells ◽

Black Phosphorus ◽

Selective Layer ◽

Dual Functional ◽

Black Phosphorus Quantum Dots ◽

Electron Extraction

Dual-functional black phosphorus quantum dot electron selective layer was designed for plastic perovskite solar cells. The efficient electron extraction and improved perovskite film quality contributed to the reasonably high efficiency.

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High-efficiency, deep blue ZnCdS/CdxZn1−xS/ZnS quantum-dot-light-emitting devices with an EQE exceeding 18%

Nanoscale ◽

10.1039/c7nr09175c ◽

2018 ◽

Vol 10 (12) ◽

pp. 5650-5657 ◽

Cited By ~ 54

Author(s):

Ouyang Wang ◽

Lei Wang ◽

Zhaohan Li ◽

Qiulei Xu ◽

Qingli Lin ◽

...

Keyword(s):

Quantum Dots ◽

Quantum Dot ◽

Quantum Efficiency ◽

External Quantum Efficiency ◽

High Efficiency ◽

Light Emitting ◽

Light Emitting Devices ◽

Deep Blue

18% peak external quantum efficiency (EQE) for deep blue QLEDs by using ZnCdS/CdxZn1−xS/ZnS quantum dots.

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Staircase Quantum Dots Configuration in Nanowires for Optimized Thermoelectric Power

Scientific Reports ◽

10.1038/srep31974 ◽

2016 ◽

Vol 6 (1) ◽

Cited By ~ 7

Author(s):

Lijie Li ◽

Jian-Hua Jiang

Keyword(s):

Quantum Dots ◽

Output Power ◽

High Efficiency ◽

Fixed Number ◽

Transport Processes ◽

Thermoelectric Device ◽

Single Pair ◽

Thermoelectric Devices ◽

Serial Connection ◽

Inelastic Transport

Abstract The performance of thermoelectric energy harvesters can be improved by nanostructures that exploit inelastic transport processes. One prototype is the three-terminal hopping thermoelectric device where electron hopping between quantum-dots are driven by hot phonons. Such three-terminal hopping thermoelectric devices have potential in achieving high efficiency or power via inelastic transport and without relying on heavy-elements or toxic compounds. We show in this work how output power of the device can be optimized via tuning the number and energy configuration of the quantum-dots embedded in parallel nanowires. We find that the staircase energy configuration with constant energy-step can improve the power factor over a serial connection of a single pair of quantum-dots. Moreover, for a fixed energy-step, there is an optimal length for the nanowire. Similarly for a fixed number of quantum-dots there is an optimal energy-step for the output power. Our results are important for future developments of high-performance nanostructured thermoelectric devices.

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