High-performance all-solution-processed quantum dot near-infrared-to-visible upconversion devices for harvesting photogenerated electrons

Zhang Nan; Tang Haodong; Shi Kanming; Wang Weigao; Deng Weiqiao; Xu Bing; Wang Kai; Sun Xiao Wei

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High-performance all-solution-processed quantum dot near-infrared-to-visible upconversion devices for harvesting photogenerated electrons

机译：用于收集光生电子的高性能全面处理的量子点近红外到可见的上变化装置

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All-solution-processed quantum dot (QD) upconversion devices were realized by constructing a colloidal PbS QD near-infrared (NIR similar to 1 mu m)-sensitive layer on the cathode side of a red CdSe quantum dot light-emitting diode (QLED). Different from conventional upconversion devices, we utilized the photogenerated electrons rather than the holes created in the NIR-sensitive layer to inject into the QLED for visible light emission. Consequently, we obtained high-performance devices with a maximum photon-to-photon conversion efficiency of 3.35% and a luminance on-off ratio of approximately 8 x 10(3). The results indicate that the device structure could be used to realize low-cost and portable high-performance QD-based upconversion devices via solution-processing. Published under license by AIP Publishing.

机译：通过在红色CDSE量子点发光二极管的阴极侧构建胶体PBS QD近红外（类似于1μm）敏感层的胶体PBS QD近红外线（QD）来实现全解决方案处理的量子点（QD）上变化装置（QLED ）。与传统的上变化装置不同，我们利用光发射的电子而不是在敏感层中产生的孔，以注入QLED以进行可见光发射。因此，我们获得了具有3.35％的最大光子 - 光子转换效率的高性能装置，亮度接通效率约为8×10（3）。结果表明，设备结构可用于通过解决方案处理来实现基于低成本和便携式的高性能QD的上升设备。通过AIP发布在许可证下发布。

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来源
《Applied Physics Letters》 |2019年第22期|221103.1-221103.5|共5页
作者
Zhang Nan; Tang Haodong; Shi Kanming; Wang Weigao; Deng Weiqiao; Xu Bing; Wang Kai; Sun Xiao Wei;
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Southern Univ Sci & Technol Guangdong Univ Key Lab Adv Quantum Dot Displays & Shenzhen Key Lab Adv Quantum Dot Displays & Light Shenzhen 518055 Guangdong Peoples R China|Southern Univ Sci & Technol Dept Elect & Elect Engn Shenzhen 518055 Guangdong Peoples R China|Chinese Acad Sci Dalian Inst Chem Phys Dalian 116023 Peoples R China;

Southern Univ Sci & Technol Guangdong Univ Key Lab Adv Quantum Dot Displays & Shenzhen Key Lab Adv Quantum Dot Displays & Light Shenzhen 518055 Guangdong Peoples R China|Southern Univ Sci & Technol Dept Elect & Elect Engn Shenzhen 518055 Guangdong Peoples R China|Univ Birmingham Dept Mech Engn Birmingham B15 2TT W Midlands England;

Southern Univ Sci & Technol Guangdong Univ Key Lab Adv Quantum Dot Displays & Shenzhen Key Lab Adv Quantum Dot Displays & Light Shenzhen 518055 Guangdong Peoples R China|Southern Univ Sci & Technol Dept Elect & Elect Engn Shenzhen 518055 Guangdong Peoples R China|Shenzhen Planck Innovat Technol Co Ltd Shenzhen 518112 Guangdong Peoples R China;

Southern Univ Sci & Technol Guangdong Univ Key Lab Adv Quantum Dot Displays & Shenzhen Key Lab Adv Quantum Dot Displays & Light Shenzhen 518055 Guangdong Peoples R China|Southern Univ Sci & Technol Dept Elect & Elect Engn Shenzhen 518055 Guangdong Peoples R China;

Chinese Acad Sci Dalian Inst Chem Phys Dalian 116023 Peoples R China;

Southern Univ Sci & Technol Guangdong Univ Key Lab Adv Quantum Dot Displays & Shenzhen Key Lab Adv Quantum Dot Displays & Light Shenzhen 518055 Guangdong Peoples R China|Southern Univ Sci & Technol Dept Elect & Elect Engn Shenzhen 518055 Guangdong Peoples R China|Shenzhen Planck Innovat Technol Co Ltd Shenzhen 518112 Guangdong Peoples R China;

Southern Univ Sci & Technol Guangdong Univ Key Lab Adv Quantum Dot Displays & Shenzhen Key Lab Adv Quantum Dot Displays & Light Shenzhen 518055 Guangdong Peoples R China|Southern Univ Sci & Technol Dept Elect & Elect Engn Shenzhen 518055 Guangdong Peoples R China;

Southern Univ Sci & Technol Guangdong Univ Key Lab Adv Quantum Dot Displays & Shenzhen Key Lab Adv Quantum Dot Displays & Light Shenzhen 518055 Guangdong Peoples R China|Southern Univ Sci & Technol Dept Elect & Elect Engn Shenzhen 518055 Guangdong Peoples R China;

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High-performance all-solution-processed quantum dot near-infrared-to-visible upconversion devices for harvesting photogenerated electrons

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