ACS Applied Nano Materials
·
2023
·
IF 5.9
Haobing Zhao,Hailong Hu,Jinping Zheng,Yuan Qie,Kuibao Yu,Yangbin Zhu,Zhiqi Luo,Lihua Lin,Kaiyu Yang,Tailiang Guo,Fushan Li
With tunable emission in the full visible region, the ecofriendly InP quantum dots (QDs) show unique application prospects in light-emitting devices. At present, InP QDs suffer from wide-bandwidth emission, especially for electroluminescence (EL), which hinders their applications in high-performance display devices. Here, we report a facile one-pot synthesis of narrow-bandwidth InP/ZnSeS/ZnS QDs using a safe phosphorus source of tris(dimethylamino)phosphine, in which the ZnSeS inner-shell layer is formed via temperature-gradient solution growth from 240 to 280 °C. The synthesized green QDs have a high photoluminescence quantum yield (PLQY) of 91% and full width at half-maximum (fwhm) of 36 nm. Moreover, the resultant quantum dot light-emitting devices (QLEDs) also show a narrow fwhm of 42 nm, which is the narrowest emission of green InP QLEDs based on a safe phosphorus source reported so far. Further modulation of the electron injection into the device by inserting a thin layer of lithium fluoride results in a peak external quantum efficiency of 5.56%.
研究领域:
材料科学
·
光电子学
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产品关联
DOI
高影响因子
JOURNAL OF ALLOYS AND COMPOUNDS
·
2025
·
IF 6.3
Chunyan Zhang,Yu Liu,Yi Zhao,Yining Qu,Li Wang,Han Zhang,Daomei Chen,Jiaqiang Wang
Most photocatalysts reported to date require sacrificial agents to achieve high-efficiency photocatalytic production of H 2 O 2 . Developing photocatalysts for H 2 O 2 production without sacrificial agents remains a significant challenge. In this study, we proposed an interfacial Schottky junction consisting of InP quantum dots (QDs) and Ti 3 C 2 T x nanosheets for photocatalytic production of H 2 O 2 without relying on any sacrificial agents. The InP/Ti 3 C 2 T x photocatalyst demonstrated high efficiency in generating H 2 O 2 , even when tested in wastewater and tap water. The photocatalytic rate of 5InP/Ti 3 C 2 T x reached 21.31 mmol g⁻¹ h⁻¹, which is 112 times greater than InP QDs. The 5InP/Ti 3 C 2 T x catalyst achieved a degradation performance of 99.9% for acid orange 7. The photocatalytic production of H 2 O 2 was effectively utilized in actual wastewater to decrease chemical oxygen demand (COD) levels. The COD concentration was decreased to 67 mg L −1 , well below the permissible threshold set by China's Ministry of Ecology and Environment for coking chemical industry emissions. As far as we know, no prior study has documented the application of InP in the photocatalytic production of H 2 O 2 within actual wastewater. This research explores the applications and impacts of InP compounds in the field of photocatalysis. This work introduces a novel approach for sacrificial agent-free photocatalytic H 2 O 2 production, offering a significant advancement in the field.
研究领域:
材料科学
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环境科学
·
化学工程
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产品关联
DOI
高影响因子
ACS Applied Materials & Interfaces
·
2022
·
IF 10.383
Xijian Duan,Jingrui Ma,Wenda Zhang,Pai Liu,Haochen Liu,Junjie Hao,Kai Wang,Lars Samuelson,Xiao Wei Sun
InP quantum dots (QDs) are the most competitive in terms of environmentally friendly QDs. However, the synthesis of InP QDs requires breakthroughs in low-cost and safe phosphorus precursors such as tri(dimethylamino)phosphine [(DMA)3P]. It is found that even if the oxygen is completely avoided, there are still oxidation state defects at the core/shell interface of InP QDs. Herein, the record-breaking (DMA)3P-based red InP QDs were synthesized with the assist of HF processing to eliminate the InPOx defect and improve the fluorescence efficiency. The maximum photoluminescence quantum yield was 97.7%, which is the highest of the red InP QDs synthesized by the aminophosphine. The external quantum efficiency and brightness of the QD light-emitting diode device are also improved accordingly from 0.6% and 1276 cd·m–2 to 3.5% and 2355 cd·m–2, respectively.
研究领域:
材料科学
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纳米技术
·
化学工程
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产品关联
DOI
PubMed
高影响因子
ORGANIC ELECTRONICS
·
2022
·
IF 3.868
Jieyu Bai,Hailong Hu,Yongshen Yu,Yangbin Zhu,Zhongwei Xu,Wenchen Zheng,Haobing Zhao,Kaiyu Yang,Lihua Lin,Tailiang Guo,Fushan Li
InP quantum dots (QDs) are considered to be one of the most promising materials for application in light-emitting devices due to the advantages of heavy-metal-free characteristic and widely tunable spectrum covering most of the visible and near-infrared regions. However, the performance of InP quantum dot light-emitting diodes (QLEDs) lags far behind their Cd-containing counterparts, especially as the InP pixelated device is still in its infancy. In this study, multi-component functional QD inks with excellent stability and printability was developed for inkjet printing InP array QLEDs. High-quality QD films can be obtained, both on flat and bank-containing substrates, by precisely controlling the competition between capillary and Marangoni flows in the printed droplets, enabling high device performance. In addition, a periodic ZnO microlens arrays was prepared by nanoimprinting technology to enhance the light extraction efficiency of inkjet-printed InP QLEDs, leading to 127.6% improvement in external quantum efficiency (EQE) compared to the control device. The maximum luminance, EQE and current efficiency of the obtained device are 17,759 cd/m 2 , 8.1% and 11.1 cd/A, respectively. These results may facilitate the applications of high performance environment-friendly QLEDs by inkjet printing technology.
研究领域:
材料科学
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光电子学
·
纳米技术
✓ 已验证
产品关联
DOI
高影响因子
JOURNAL OF ALLOYS AND COMPOUNDS
·
2024
·
IF 5.8
Chunyan Zhang,Xiaohong Chen,Yanmi Liu,Yi Zhao,Han Zhang,Daomei Chen,Shirong Zong,Jiaqiang Wang
Most photocatalysts reported to date need sacrificial agents (ethanol or methanol) to quench h + and facilitate the reduction of O 2 to H 2 O 2 . This requirement increases the cost of H 2 O 2 production and hinders the advancement of photocatalytic technology. Exploring a novel photocatalyst without the sacrificial agents for photocatalytic production of H 2 O 2 remains a huge challenge. In this research, we designed Indium phosphide (InP) quantum dot (QDs)-decorated bismuth tungstate (Bi 2 WO 6 ) microspheres for the photocatalytic generation of H 2 O 2 without the use of any sacrificial agents. The photocatalytic efficiency of InP/Bi 2 WO 6 composites for H 2 O 2 production reached 17.45 mmol g −1 h −1 , which is 90.8 times and 53.6 times greater than pure InP and Bi 2 WO 6 , respectively. Furthermore, InP/Bi 2 WO 6 composites demonstrated high photocatalytic H 2 O 2 production efficiency when used in industrial wastewater and tap water. In addition, in-situ photocatalytic H 2 O 2 synthesis was applied to actual coking wastewater for lowering chemical oxygen demand (COD) levels, and the removal rate was more than 60%. Remarkably, the degradation efficiency of acid orange 7 using the 3InP/Bi 2 WO 6 sample reached 99.9%. To the best of our knowledge, no other research has reported the use of InP QDs for the photocatalytic in-situ synthesis of H 2 O 2 in real water. This study provides valuable insights for the development of InP-based photocatalysts.
研究领域:
材料科学
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环境科学
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化学工程
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产品关联
DOI
高影响因子
MATERIALS & DESIGN
·
2022
·
IF 9.417
Yanbin Zhang,Lu-Lu Qiao,Zhi-Qiang Zhang,Yong-Fang Liu,Lin-Song Li,Huaibin Shen,Mei-Xia Zhao
Numerous cellular functions are closely reliant on mitochondria and so the capability to conduct long-term stable studies of their activity is of great importance. However, current commercial mitochondrial probes are severely limited in their ability to trace mitochondria due to their inherently poor stability. Here, for the first time, we designed a novel mitochondrial fluorescent probe using InP quantum dots (QDs) as a fluorescent master and skillfully combined with (3-carboxypropyl)triphenylphosphine (TPP) for specific recognition. The bespoke InP QDs probes described here exhibited clear advantages, including simple and low-cost synthesis, high quantum yields, extremely low toxicity, good biocompatibility, and excellent photochemical stability, thus representing a versatile, novel mitochondrial fluorescent probe, particularly suitable in applications traditionally undertaken by Cd-based QDs in biological fields.
研究领域:
细胞生物学
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生物医学工程
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材料科学
✓ 已验证
产品关联
DOI
高影响因子
APPLIED SURFACE SCIENCE
·
2023
·
IF 6.7
Shuaitao Qin,Zhongjie Cui,Zhuoqi Wen,Dan Yang,Haiyang He,Jinchan Zhao,Mingliang Zhang,Shiliang Mei,Wanlu Zhang,Ruiqian Guo
Colloidal indium phosphide (InP) quantum dots (QDs) have attracted worldwide attention due to their intrinsic environmental friendliness and excellent optical properties. The incorporation of metal ions has been a common way to modify the properties of InP QDs and some metal ions have been confirmed to be effective in preparation of blue-emitting InP QDs. Herein, the interfacial anchoring effect of rare earth metal ions neodymium(III) (Nd 3+ ) is unveiled for the first time by analyzing the alteration of spectra, size, and composition of QDs after Nd doping. It is evidenced that Nd substitutes for In of InP during the process of nucleation. More crucially, Nd is anchored at the surface of InP and inhibits their further growth at the high temperature of shelling. This ensures that the size of InP QDs and the absorption peak position are almost maintained during shell growth. It is demonstrated that the emitting wavelength of InP/ZnS core/shell QDs is systematically tunable through varying Nd amounts. Finally, the optimized InP/ZnS QDs exhibiting an emission peak of 470 nm with a photoluminescence quantum yield of 44%, and a full width at half-maximum of 46 nm are prepared.
研究领域:
材料科学
·
光学
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产品关联
DOI
高影响因子
Science China-Chemistry
·
2019
·Vol. 63
·期 1
·28-34
·
IF 6.085
Zhao Bohang,Huang Yi,Liu Dali,Yu Yifu,Zhang Bin
The development of a facile strategy to construct stable hierarchal porous heterogeneous photocatalysts remains a great challenge for efficient CO 2 reduction. Additionally, hole-trapping sacrificial agents (e.g., triethanolamine, triethylamine, and methanol) are mostly necessary, which produce useless chemicals, and thus cause costs/environmental concerns. Therefore, utilizing oxidation ability of holes to develop an alternative photooxidation reaction to produce value-added chemicals, especially coupled with CO 2 photoreduction, is highly desirable. Here, an in situ partial phosphating method of In 2 O 3 is reported for synthesizing InP–In 2 O 3 p-n junction. A highly selective photooxidation of tetrahydroisoquinoline (THIQ) into value-added dihydroisoquinoline (DHIQ) is to replace the hole driven oxidation of typical sacrificial agents. Meanwhile, the photoelectrons of InP–In 2 O 3 p-n junction can induce the efficient photoreduction of CO 2 to CO with high selectivity and stability. The evolution rates of DHIQ and CO are 2 and 3.8 times higher than those of the corresponding In 2 O 3 n-type precursor, respectively. In situ irradiated X-ray photoelectron spectroscopy and electron spin resonance are utilized to confirm that the direct Z-scheme mechanism of InP–In 2 O 3 p-n junction accelerate the efficient separation of photocarriers.
研究领域:
材料科学
·
环境科学
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产品关联
DOI
高影响因子
Advanced Energy Materials
·
2021
·Vol. 11
·期 31
·2101230
·
IF 29.368
Hongyang Zhao,Xin Li,Mengke Cai,Cheng Liu,Yimin You,Rui Wang,Ali Imran Channa,Feng Lin,Da Huo,Guofeng Xu,Xin Tong,Zhiming M. Wang
As emerging eco-friendly alternatives to traditional Cd/Pb-based quantum dots (QDs), InP/ZnSe(S) core/shell QDs have demonstrated huge potential in light-emitting technologies. So far, these QDs have been rarely employed in solar energy conversion applications due to their type-I band structure offering limited photo-induced charge carrier separation and transfer. Here, a controllable Cu shell doping approach is reported to engineer the optoelectronic properties of InP/ZnSe core/shell QDs and realize high performance and stable solar-driven photoelectrochemical (PEC) hydrogen evolution. As compared to the pristine InP/ZnSe QDs, the Cu-doped core/shell QDs exhibit enhances the photo-induced electron transfer rate due to the capture of photo-generated holes via Cu impurity states in the shell, leading to improved photocurrent density and long-term durability in as-fabricated InP/ZnSe:Cu QDs-PEC devices under standard one sun illumination. The results indicate that the doping of Cu in the shell has a preeminent effect on the optoelectronic properties of the core/shell QDs and may open up new avenues to tailor eco-friendly core/shell QDs for high performance and stable solar energy conversion.
研究领域:
材料科学
·
能源转换技术
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DOI
高影响因子
OPTICS EXPRESS
·
2024
·Vol. 32
·期 22
·37984-37993
·
IF 3.2
Linfeng Wang,Xiaoyue Huang,Tingting Zhang,Jinke Bai,Ting Zhao,Bing Xu,Qinghua Li,Xiao Jin,Xiao Jin,Yuxiao Wang,Xueru Zhang,Yinglin Song,Yinglin Song
InP quantum dots (QDs) have emerged as promising nanomaterials in various fields due to their exceptional optical properties. However, its wide emission linewidth limits further application. In this study, we synthesized high-quality InP/ZnSe/ZnS QDs by suppressing hole defects. The unreacted In precursors during nucleation easily enter ZnSe in the subsequent shelling process, forming a hole trapping center that adversely affects the photo-excitons radiative recombination. Our results demonstrate that the presence of In ions in ZnSe shell enhances exciton-phonon coupling, broadens the fluorescence emission spectrum, and weakens exciton binding energy. The optimized InP QDs exhibit a line width of 44 nm and 90% PLQY at 630 nm. Furthermore, our investigation into the interaction between shell hole defects and core exciton function provides valuable insights for designing and preparing another high-performance core-shell heterojunction QDs.
研究领域:
纳米技术
·
材料科学
·
光学
✓ 已验证
产品关联
DOI
PubMed
高影响因子
INORGANIC CHEMISTRY
·
2024
·
IF 4.3
Ranran Hu,Fengkai He,Ruixue Hou,Zhenghui Wu,Xiangtong Zhang,Huaibin Shen
Low-toxicity InP-based quantum dots (QDs) exhibit potential for replacing Cd/Pb-containing QDs in the visible and near-infrared regions. Despite advancements, further improvement relies on synthesizing homogeneous InP QDs to achieve a high color purity. In a commonly employed two-step “seed-mediated” synthetic approach, we demonstrate the high sensitivity of InP seed sizes and size distribution to the quantities of trioctylphosphine (TOP) and tris(trimethylsilyl)phosphine [(TMS)3P], attributed to the process of “self-focusing of size distribution” and enhanced reactivity of In-oleate through coordination with TOP. During growth, the processes of size focusing and defocusing are modulated by the accumulation of oleic acid and TOP molecules, as well as the amount of (TMS)3P in the growth precursor, which may relate to the dissolution process of InP magic size clusters. Through precise control, the best valley/depth ratio of InP QDs was 0.52 at the first absorption peak at 571 nm, resulting in luminescence with a full width at half-maximum of 35 at 620 nm with an absolute photoluminescence quantum yield around 90% after heteroepitaxial growth with ZnSe and ZnS shells.
研究领域:
材料科学
·
纳米技术
·
光学
✓ 已验证
DOI
高影响因子
Light-Science & Applications
·
2022
·Vol. 11
·期 1
·1-10
·
IF 20.257
Yu Peng,Cao Sheng,Shan Yuliang,Bi Yuhe,Hu Yaqi,Zeng Ruosheng,Zou Bingsuo,Wang Yunjun,Zhao Jialong
InP-based quantum dot light-emitting diodes (QLEDs), as less toxic than Cd-free and Pb-free optoelectronic devices, have become the most promising benign alternatives for the next generation lighting and display. However, the development of green-emitting InP-based QLEDs still remains a great challenge to the environmental preparation of InP quantum dots (QDs) and superior device performance. Herein, we reported the highly efficient green-emitting InP-based QLEDs regulated by the inner alloyed shell components. Based on the environmental phosphorus tris(dimethylamino)phosphine ((DMA) 3 P), we obtained highly efficient InP-based QDs with the narrowest full width at half maximum (~35 nm) and highest quantum yield (~97%) by inserting the gradient inner shell layer ZnSe x S 1−x without further post-treatment. More importantly, we concretely discussed the effect and physical mechanism of ZnSe x S 1– x layer on the performance of QDs and QLEDs through the characterization of structure, luminescence, femtosecond transient absorption, and ultraviolet photoelectron spectroscopy. We demonstrated that the insert inner alloyed shell ZnSe x S 1− x provided bifunctionality, which diminished the interface defects upon balancing the lattice mismatch and tailored the energy levels of InP-based QDs which could promote the balanced carrier injection. The resulting QLEDs applying the InP/ZnSe 0.7 S 0.3 /ZnS QDs as an emitter layer exhibited a maximum external quantum efficiency of 15.2% with the electroluminescence peak of 532 nm, which was almost the highest record of InP-based pure green-emitting QLEDs. These results demonstrated the applicability and processability of inner shell component engineering in the preparation of high-quality InP-based QLEDs.
研究领域:
材料科学
·
光电子学
·
纳米技术
✓ 已验证
DOI
高影响因子
危险品化学品经营许可证（带存储）