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highly efficient Polymer Light—Emitting Devices Using a New Phosphorescent Material

Chinese Physics Letters 2003年第7期20卷 1141-1143页

作者：王建华段炼王立铎邱勇 OrganicOptoelectronicsLaboratory DepartmentofChemistryTsinghuauniversityBeijing100084

A new phosphorescent material bis(2-phenyl-benzoimiazole) acetylacetonato iridium ((PBI)2IrAcac) is designed and synthesized. The absorption, photoluminescence and electroluminescence are measured. The polymer-based light-emitting devices which use polyvinylcarbazole (PVK) as host and (PBI)2IrAcac as emitter were fabricated. These light-emitting devices show a bright green emission at 548 nm. The device ITO/(PBI)2IrAcac:PVK/BCP/ Alq3/Mg:Ag shows a very high efficiency. A peak external quantum efficiency of 21.5 cd/A (5.8%) was obtained at 0.1 mA/cm2. The maximum brightness is 3840 cd/m2.

关键词： highly efficient Polymer Light-Emitting Devices New Phosphorescent Material

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highly efficient photocatalytic NO removal and in situ DRIFTS investigation on SrSn(OH)_(6)

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Chinese Chemical Letters 2022年第3期33卷 1259-1262页

作者： Wendong Zhang Yun Wang Yi Wang Yi Liang Fan Dong Chongqing Key Laboratory of Inorganic Functional Materials Chongqing Key Laboratory of Green Synthesis and ApplicationChongqing Normal UniversityChongqing 401331China Yangtze Delta Region Institute(Huzhou)&Institute of Fundamental and Frontier Sciences University of Electronic Science and Technology of ChinaHuzhou 313001China State Centre for International Cooperation on Designer Low-carbon and Environmental Materials(CDLCEM) School of Materials Science and EngineeringZhengzhou UniversityZhengzhou 450001China

A novel SrSn(OH)_(6) photocatalyst with large plate and particle size were synthesized via a facile chemical precipitation method. The photocatalytic activity of the SrSn(OH)_(6) was evaluated by the removal of NO at ppb level under UV light irradiation. Based on the ESR measurements, SrSn(OH)_(6) photocatalyst was found to have the ability to generate the main active species of O_(2)^(·-), ^(·)OH and ^(1)O_(2) during the photocatalytic process. Moreover, SrSn(OH)_(6) photocatalyst not only exhibits high photocatalytic activity for NO removal (79.6%), but also has good stability after five cycles. The in situ diffuse reflectance infrared Fourier transform spectroscopy (DRIFTS) was used to investigate the NO_(x) transfer pathway and the intermediate products distribution during the adsorption and photocatalytic NO oxidation process. The present work not only provides an efficient material for air pollutants purification at room temperature but also in-depth understanding of the mechanism involved in the photocatalytic NO removal process.

关键词： highly efficient NO removal In situ DRIFTS investigation SrSn(OH)_(6) Reaction mechanism

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BiOI Nanosheets Grown by Chemical Vapor Deposition and Its Conversion to highly efficient BiVO4 Photoanode

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Chinese Journal of Chemistry 2017年第1期35卷 30-34页

作者： Ling Qian Chongwu Wang Aiping Chen Huagui Yang Key Laboratory for Ultrafine Materials of Ministry of Education School of Materials Science and Engineering East China University of Science and Technology Shanghai 200237 China

Bismuth vanadate （BiVO4） has been identified as one of the excellent visible-light-responsive photoanode for use in the photoelectrochemical water splitting. Recently intense research efforts have been devoted to the development of highly efficient BiVO4 photoanode. Herein, we reported a low-cost and scalable method for preparing nanostructured BiVO4 film. A much enhanced photocurrent （1.5 mAocm 2） was obtained for such film, which was 6.5 times higher than that of planar film at 1.23 V [vs. RHE （Reversible Hydrogen Electrode）]. The method provides an eco-friendly, reproducible and facile way to scale up on different substrates with attractive potential.

关键词： chemical vapor deposition bismuth vanadate photoelectrochemical water splitting highly efficient

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新型高效碳基钙钛矿太阳能电池（英文）

新型高效碳基钙钛矿太阳能电池（英文）

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第二届全国太阳能电池材料与器件大会

作者：王宇迪史彦涛 State Key Laboratory of Fine Chemicals Dalian University of Technology

Perovskite solar cells(PSCs) as a representative of 3rd is at the frontier towards commercialization, which however is being hindered by the issues of long-term durability and fabrication cost that are both associated with the use of Ag/Au electrode. Among various PSC architectures developed so far, carbon-based PSCs(C-PSCs) demonstrate the best stability and the lowest cost. Whereas, despite numerous efforts, the power conversion efficiency(PCE) of carbon-based perovskite solar cells(C-PSCs) is still lag far behind the normal Ag/Au-electrode-based PSCs, which is mainly because of the huge energy loss caused by sluggish charge transfer kinetics occurring in carbon electrode and its related interfaces. Herein, by combination of an advanced cell architecture(modular C-PSCs, MC-PSCs), we report a strategy of dual interface coupling to well tune the charge transfer kinetics regarding hole transport layer(HTL) itself and the interface between HTL and carbon electrode. Based on this strategy, high PCEs up to 22.07%(with a certified PCE of 21.9%, a record for C-PSCs to date) and excellent operational stability under persistent light irradiation have been achieved.

关键词： carbon-based perovskite solar cells highly efficient stability modular cell architecture

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