PubAg

Main content area

You searched for: Subject "electron transfer" Remove constraint Subject: "electron transfer"
Start Over

Search

16,725  Search Results

« Previous | 1 - 20 of 16,725 |
Number of results to display per page

Search Results

1. Improved Performance for Thermally Evaporated Perovskite Light-Emitting Devices via Defect Passivation and Carrier Regulation

Author:
Jia, Kuifeng; Song, Li; Hu, Yongsheng; Guo, Xiaoyang; Liu, Xingyuan; Geng, Chong; Xu, Shu; Fan, Ruiting; Huang, Lixin; Luan, Nannan; Bi, Wengang
Source:
ACS applied materials & interfaces 2020 v.12 no.13 pp. 15928-15933
ISSN:
1944-8252
Subject:
electron transfer,   etc   ; cations; vacuum processing;     Show all 3 Subjects
Abstract:
... Efficient inorganic perovskite light-emitting devices (PeLEDs) with a vacuum-deposited CsPbBr₃ emission layer were realized by introducing an ultrathin 2-phenylethanamine bromide interlayer. The PEA⁺ cations not only passivated the nonradiative defects by terminating on the CsPbBr₃ surface but also regulated the charge transport to balance the hole and electron transport. Consequently, the PeLEDs ...
DOI:
10.1021/acsami.0c01173

2. Strong spin-orbit interaction induced by transition metal oxides at the surface of hydrogen-terminated diamond

Author:
Xing, Kaijian; Creedon, Daniel L.; Yianni, Steve A.; Akhgar, Golrokh; Zhang, Lei; Ley, Lothar; McCallum, Jeffrey C.; Qi, Dong-Chen; Pakes, Christopher I.
Source:
Carbon 2020 v.164 pp. 244-250
ISSN:
0008-6223
Subject:
electron transfer,   etc   ; carbon; oxides; temperature; thermodynamics;     Show all 5 Subjects
Abstract:
... Hydrogen-terminated diamond possesses an intriguing p-type surface conductivity which is induced via thermodynamically driven electron transfer from the diamond surface into surface acceptors such as atmospheric adsorbates, a process called surface transfer doping. High electron affinity transition metal oxides (TMOs) including MoO₃ and V₂O₅ have been shown to be highly effective solid-state surfa ...
DOI:
10.1016/j.carbon.2020.03.047

3. Novel Positive Polaron Stabilizing n-Type Host for High Efficiency and Long Lifetime in Blue Phosphorescent Organic Light-Emitting Diodes

Author:
Kim, Do Sik; Lee, Kyung Hyung; Lee, Jun Yeob
Source:
ACS applied materials & interfaces 2020 v.12 no.17 pp. 19737-19745
ISSN:
1944-8252
Subject:
electron transfer,   etc   ; energy; light emitting diodes; phosphorescence;     Show all 4 Subjects
Abstract:
... Four electron transport type hosts withstanding the positive polaron stress were synthesized using the benzo[4,5]thieno[3,2-d]pyrimidine core to develop high triplet energy hosts. Four benzo[4,5]thieno[3,2-d]pyrimidine-derived hosts, 4-(9H-carbazol-9-yl)-2-(3-(triphenylsilyl)phenyl)benzo[4,5]thieno[3,2-d]pyrimidine (CzBTPmSi), 2,4-di(9H-carbazol-9-yl)benzo[4,5]thieno[3,2-d]pyrimidine (2CzBTP), 2-( ...
DOI:
10.1021/acsami.0c02260

4. Ultrafast Carrier Dynamics in 2D CdSe Nanoplatelets–CsPbX₃ Composites: Influence of the Halide Composition

Author:
Ghosh, Goutam; Dutta, Avisek; Ghosh, Arnab; Ghosh, Srijon; Patra, Amitava
Source:
Journal of physical chemistry 2020 v.124 no.18 pp. 10252-10260
ISSN:
1932-7455
Subject:
electron transfer,   etc   ; electric current; engineering; solar cells;     Show all 4 Subjects
Abstract:
... Two-dimensional (2D) material-based composites are considered to be an important class of materials for light-harvesting applications because of their efficient charge separation. In this article, we have designed composites of 2D CdSe nanoplatelets (NPLs) and CsPbX₃ (X = mixture of Br and I or I) perovskite nanocrystals and investigated their ultrafast carrier dynamics using ultrafast spectroscop ...
DOI:
10.1021/acs.jpcc.0c03206

5. Efficient Organic Solar Cells Based on Non-Fullerene Acceptors with Two Planar Thiophene-Fused Perylene Diimide Units

Author:
Liu, Juncheng; Lu, Hao; Liu, Yahui; Zhang, Jianqi; Li, Cuihong; Xu, Xinjun; Bo, Zhishan
Source:
ACS applied materials & interfaces 2020 v.12 no.9 pp. 10746-10754
ISSN:
1944-8252
Subject:
electron transfer,   etc   ; mixing; polymers; solar cells;     Show all 4 Subjects
Abstract:
... We designed and synthesized two non-fullerene acceptors (CDT-TFP and C8X-TFP), which comprise a central 4H-cyclopenta[2,1-b:3,4-b′]dithiophene (CDT) as the bridge and two thiophene-fused perylene diimide (TFP) units. The bulky side chains, such as the 4-hexylphenyl side chains, on the CDT bridge can effectively prevent the acceptor molecules from forming large aggregates, and the π–π stacking of t ...
DOI:
10.1021/acsami.9b22927

6. Serial and parallel spin circuits at the molecular scale with two atomic-vacancies in graphene: Amplification of spin-filtering effect

Author:
Wen, Shizheng; Gao, Shiwu; Yam, ChiYung
Source:
Carbon 2019 v.154 pp. 357-362
ISSN:
0008-6223
Subject:
electron transfer,   etc   ; deformation; graphene;     Show all 3 Subjects
Abstract:
... Our previous work demonstrated that graphene devices with monovacancy defects possess spin filtering effect which offers potential applications in spintronics. Here, using first-principles calculations, we further study the spin-dependent electron transport properties and spin filtering efficiency of graphene devices with double vacancies that are arrayed in parallel and serial connections. It is ...
DOI:
10.1016/j.carbon.2019.08.029

7. Hypsochromic solvent shift of the charge separation band in ionic donor–acceptor Li⁺@C₆₀⊂[10]CPP

Author:
Stasyuk, Anton J.; Stasyuk, Olga A.; Solà, Miquel; Voityuk, Alexander A.
Source:
Chemical communications 2019 v.55 no.75 pp. 11195-11198
ISSN:
1364-548X
Subject:
electron transfer,   etc   ; lithium; solvents;     Show all 3 Subjects
Abstract:
... In this work, we study computationally, using the DFT/TDDFT approach, the photoinduced electron transfer (PET) in CPP-based donor–acceptor supramolecules C₆₀⊂[10]CPP and Li⁺@C₆₀⊂[10]CPP. Based on the analysis of the excited states we find a system, Li⁺@C₆₀⊂[10]CPP, which shows anomalous solvent effects, i.e., destabilization of charge separated states by polar medium. ...
DOI:
10.1039/c9cc05787k

8. Proton coupled electron transfer: novel photochromic performance in a host–guest collaborative MOF

Author:
Shao, Zhichao; Wu, Qiong; Han, Xiao; Zhao, Yujie; Xie, Qiong; Wang, Hongfei; Hou, Hongwei
Source:
Chemical communications 2019 v.55 no.73 pp. 10948-10951
ISSN:
1364-548X
Subject:
electron transfer,   etc   ; coordination polymers;     Show all 2 Subject
Abstract:
... Proton coupled electron transfer has been successfully introduced to a host–guest collaborative metal–organic framework material, which exhibits new photochromic properties with reversible, controllable and efficient characteristics. ...
DOI:
10.1039/c9cc05498g

9. Selective Defluoroallylation of Trifluoromethylarenes

Author:
Luo, Chaosheng; Bandar, Jeffrey S.
Source:
Journal of the American Chemical Society 2019 v.141 no.36 pp. 14120-14125
ISSN:
1520-5126
Subject:
electron transfer,   etc   ; allylation; derivatization;     Show all 3 Subjects
Abstract:
... We report a fluoride-initiated coupling reaction between trifluoromethylarenes and allylsilanes to access allylated α,α-difluorobenzylic compounds. This method’s utility is demonstrated through a 30 mmol scale reaction, a sequential allylation/derivatization protocol and multiple examples of site-selective trifluoromethylarene allylation. Initial mechanistic studies suggest a base-induced single e ...
DOI:
10.1021/jacs.9b07766

10. What can we still learn from the electrochromic band-shifts in Photosystem II?

Author:
Boussac, Alain; Sellés, Julien; Sugiura, Miwa
Source:
Biochimica et biophysica acta 2020 v.1861 no.5-6 pp. 148176
ISSN:
0005-2728
Subject:
electron transfer,   etc   ; hydrogen bonding; models; mutants; oxidation; pH; photosystem II;     Show all 7 Subjects
Abstract:
... Electrochromic band-shifts have been investigated in Photosystem II (PSII) from Thermosynechoccocus elongatus. Firstly, by using Mn-depleted PsbA1-PSII and PsbA3-PSII in which the QX absorption of PheD₁ differs, a band-shift in the QX region of PheD₂ centered at ~ 544 nm has been identified upon the oxidation, at pH 8.6, of TyrD. In contrast, a band-shift due to the formation of either QA•⁻ or Tyr ...
DOI:
10.1016/j.bbabio.2020.148176

11. Superior potassium-ion storage properties by engineering pseudocapacitive sulfur/nitrogen-containing species within three-dimensional flower-like hard carbon architectures

Author:
Li, Wenda; Wang, Dezhu; Gong, Zhijiang; Guo, Xiaosong; Liu, Jing; Zhang, Zhonghua; Li, Guicun
Source:
Carbon 2020 v.161 pp. 97-107
ISSN:
0008-6223
Subject:
electron transfer,   etc   ; anodes; batteries; carbon; electric power; potassium; sulfur;     Show all 7 Subjects
Abstract:
... Rechargeable non-aqueous potassium-ion batteries have been regarded as one of ideal candidates for large-scale electric energy storage applications. However, the achievement of high reversible capacity and rate capability is still a great challenge. In this work, an extraordinary S-/N-/O- multielement-doped three-dimensional (3D) flower-like hard carbon architecture is firstly proposed as promisin ...
DOI:
10.1016/j.carbon.2020.01.052

12. Significantly enhanced electron transport of a nonfullerene acceptor in a blend film with a high hole mobility polymer of high molecular weight: thick-film nonfullerene polymer solar cells showing a high fill factor

Author:
Wang, Zhen; Jiang, Haiying; Liu, Xuncheng; Liang, Jiahao; Zhang, Lianjie; Qing, Lechi; Wang, Qian; Zhang, Wei; Cao, Yong; Chen, Junwu
Source:
Journal of materials chemistry A 2020 v.8 no.16 pp. 7765-7774
ISSN:
2050-7496
Subject:
electron transfer,   etc   ; fullerene; molecular weight; polymers; solar cells; solar energy;     Show all 6 Subjects
Abstract:
... Overcoming fill factor (FF) decay in thick fullerene active layers has been demonstrated with high hole mobility (μₕ) polymers. However, this issue remains a challenge for thick active layers with nonfullerene acceptors. Here we demonstrate a high FF and highly efficient nonfullerene based thick active layer with a high μₕ polymer as the donor. Its relatively balanced hole and electron transport w ...
DOI:
10.1039/d0ta01340d

13. Hybrid Fullerene-Based Electron Transport Layers Improving the Thermal Stability of Perovskite Solar Cells

Author:
Li, Shu-Hui; Xing, Zhou; Wu, Bao-Shan; Chen, Zuo-Chang; Yao, Yang-Rong; Tian, Han-Rui; Li, Meng-Fan; Yun, Da-Qin; Deng, Lin-Long; Xie, Su-Yuan; Huang, Rong-Bin; Zheng, Lan-Sun
Source:
ACS applied materials & interfaces 2020 v.12 no.18 pp. 20733-20740
ISSN:
1944-8252
Subject:
electron transfer,   etc   ; chemical interactions; fullerene; nitrogen; solar cells; thermal stability;     Show all 6 Subjects
Abstract:
... The structure-dependent thermal stability of fullerene electron transport layers (ETLs) and its impact on device stability have been underrated for years. Based on cocrystallographic understanding, herein, we develop a thermally stable ETL comprising a hybrid layer of [6,6]-phenyl-C₆₁-butyric acid methyl ester (PCBM) and [6,6]-phenyl-C₆₁-propylbenzene (PCPB). By tuning the weight ratios of PCBM an ...
DOI:
10.1021/acsami.0c02119

14. Structure-Dependent Electron Affinities of Perylene Diimide-Based Acceptors

Author:
Sugie, Ai; Han, Weining; Shioya, Nobutaka; Hasegawa, Takeshi; Yoshida, Hiroyuki
Source:
Journal of physical chemistry 2020 v.124 no.18 pp. 9765-9773
ISSN:
1932-7455
Subject:
electron transfer,   etc   ; dyes; energy; physical chemistry; semiconductors; spectroscopy;     Show all 6 Subjects
Abstract:
... Perylene dyes are a representative framework of electron transport (n-type) organic semiconductors. The energy of their electron transport level is the electron affinity (EA), which is an important parameter in selecting the electron transport materials for device application and of the material’s electron-accepting ability. Recent studies show that EA may vary by as much as 1 eV depending on the ...
DOI:
10.1021/acs.jpcc.0c01743

15. Photoredox-Catalyzed Oxy-/Aminofluoroalkylative Cyclization of Alkenes

Author:
Liao, Jianhua; Ouyang, Lu; Lai, Yinlong; Luo, Renshi
Source:
Journal of organic chemistry 2020 v.85 no.8 pp. 5590-5597
ISSN:
1520-6904
Subject:
electron transfer,   etc   ; alkenes; catalytic activity; moieties; organic chemistry; voltammetry;     Show all 6 Subjects
Abstract:
... Here we describe a photoredox-catalyzed oxy-/aminofluoroalkylative cyclization of alkenes for coupling available Rf–I reagents to generate fluoroalkylated 2,3-dihydrobenzofuran and indolin derivatives with good to excellent yields under mild conditions. A wide range of functional groups are tolerated. The mechanistic investigation of radical trapping and cyclic voltammetry experiments proposed tha ...
DOI:
10.1021/acs.joc.0c00457

16. Bimetallic Metal–Organic Framework-Derived Pomegranate-like Nanoclusters Coupled with CoNi-Doped Graphene for Strong Wideband Microwave Absorption

Author:
Xu, Xueqing; Ran, Feitian; Fan, Zhimin; Cheng, Zhongjun; Lv, Tong; Shao, Lu; Liu, Yuyan
Source:
ACS applied materials & interfaces 2020 v.12 no.15 pp. 17870-17880
ISSN:
1944-8252
Subject:
electron transfer,   etc   ; cobalt; coordination polymers; graphene; magnetism; nanoparticles; nickel; porosity;     Show all 8 Subjects
Abstract:
... Metal–organic frameworks (MOFs) featuring high porosity and tunable structure make them become promising candidates to fabricate carbon-based microwave absorption (MA) materials to meet the requirements of electronic reliability and defense security. However, it is challenging to rationally design a well-organized micro-nanostructure to simultaneously achieve strong and wideband MA performance. He ...
DOI:
10.1021/acsami.0c01572

17. CuS@defect-rich MoS2 core-shell structure for enhanced hydrogen evolution

Author:
Liu, Lei; Liu, Xiaolin; Jiao, Songlong
Source:
Journal of colloid and interface science 2020 v.564 pp. 77-87
ISSN:
0021-9797
Subject:
electron transfer,   etc   ; catalytic activity; electrical conductivity; hydrogen production; molybdenum disulfide;     Show all 5 Subjects
Abstract:
... The catalytic activity of MoS₂ for hydrogen evolution reaction (HER) is closely-related to its active edge sites and electrical conductivity. In this work, a novel strategy to enhance HER by introducing defects into interface to take advantage of synergistic effect between them was reported. Specifically, in the first step, molybdenum disulfide (MoS₂) with additional active edge sites was prepared ...
DOI:
10.1016/j.jcis.2019.12.106

18. Management of Delayed Fluorophor-Sensitized Exciton Harvesting for Stable and Efficient All-Fluorescent White Organic Light-Emitting Diodes

Author:
Xie, Feng-Ming; Zou, Shi-Jie; Li, Yanqing; Lu, Lin-Yang; Yang, Rui; Zeng, Xin-Yi; Zhang, Guang-Hui; Chen, Jingde; Tang, Jian-Xin
Source:
ACS applied materials & interfaces 2020 v.12 no.14 pp. 16736-16742
ISSN:
1944-8252
Subject:
electron transfer,   etc   ; color; energy; fluorescence; light emitting diodes; moieties;     Show all 6 Subjects
Abstract:
... White organic light-emitting diodes (WOLEDs) using thermally activated delayed fluorescence (TADF)-based single emissive layer (SEL) have attracted enormous attention because of their simple device structure and full exciton utilization potential for high efficiency. However, WOLEDs made of an all-TADF SEL usually exhibit serious efficiency roll-off and poor color stability due to serious exciton- ...
DOI:
10.1021/acsami.0c04251

19. An inorganic molecule-induced electron transfer complex for highly efficient organic solar cells

Author:
Kang, Qian; Zu, Yunfei; Liao, Qing; Zheng, Zhong; Yao, Huifeng; Zhang, Shaoqing; He, Chang; Xu, Bowei; Hou, Jianhui
Source:
Journal of materials chemistry A 2020 v.8 no.11 pp. 5580-5586
ISSN:
2050-7496
Subject:
electron transfer,   etc   ; capacitance; chemical composition; electrodes; solar cells; solar energy;     Show all 6 Subjects
Abstract:
... Interfacial engineering of electrode modification has proved to be an effective approach for improving the power conversion efficiency (PCE) of organic solar cells (OSCs). However, compared to the advances in active layers, the study of interfacial modification is seriously lagging and the contribution of electrode modification to PCE enhancement is marginalized. Herein, we synthesized a series of ...
DOI:
10.1039/d0ta00999g

20. Flower-like NiO/ZnO hybrid coated with N-doped carbon layer derived from metal-organic hybrid frameworks as novel anode material for high performance sodium-ion batteries

Author:
Zhang, Xiaojie; Gao, Xiaoyan; Li, Dong; Duanmu, Chuansong; Jiang, Jinlong; Chen, Jing; Yu, Xiangkun; Dong, Peishi
Source:
Journal of colloid and interface science 2020 v.563 pp. 354-362
ISSN:
0021-9797
Subject:
electron transfer,   etc   ; anodes; batteries; carbon; nickel oxide; zinc oxide;     Show all 6 Subjects
Abstract:
... Metal-organic hybrid frameworks are considered as the promising precursor to prepare high performance anode materials for sodium-ion batteries (SIBs). In the present work, flower-like NiO/ZnO@NC with hollow and porous structure was prepared via a facile solvothermal and calcination process. The hollow and porous structure not only improve the electron transport capability, and but also inhibits th ...
DOI:
10.1016/j.jcis.2019.12.090