Results 41 to 50 of about 115,444 (271)

Reinforcement of ultra-low dosage of polycarboxylate ether (PCE) grafted nano-silica sol to the mechanical and durable properties of cement mortar

open access: yesJournal of Materials Research and Technology, 2022
How good dispersion of nano-SiO2 (NS) plays a great influence on how strong reinforcing efficiency to cement-based materials. In this study, a novel nanohybrid of polycarboxylate ether (PCE) grafted nano-silica sol (PCE@NSS) was prepared by sol–gel ...
Jianxiong Miao, Liqun Lu, Jinyang Jiang
doaj   +1 more source

A low-bandgap dimeric porphyrin molecule for 10% efficiency solar cells with small photon energy loss [PDF]

open access: yes, 2018
Dimeric porphyrin molecules have great potential as donor materials for high performance bulk heterojunction organic solar cells (OSCs). Recently reported dimeric porphyrins bridged by ethynylenes showed power conversion efficiencies (PCEs) of more than ...
Cao, Y   +8 more
core  

Reducing Open‐Circuit Voltage Losses in Wide‐Bandgap FAPbBr3 Perovskite Solar Cells for Continuous Unassisted Light‐Driven Water Splitting

open access: yesAdvanced Functional Materials, EarlyView.
The combination of formamidinium thiocyanate and 1,3‐propane diammonium iodide for bulk and top‐surface passivation, and a ternary fullerene blend to improve energy band alignment, suppresses energy losses in wide‐bandgap FAPbBr3 perovskite solar cells.
Laura Bellini   +9 more
wiley   +1 more source

High‐Rate FA‐Based Co‐Evaporated Perovskites: Understanding Rate Limitations and Practical Considerations to Overcome Their Impact

open access: yesAdvanced Functional Materials, EarlyView.
Vacuum‐based deposition is promising for perovskite solar cells to be successfully commercialized. However, co‐evaporation, the most common vapor phase deposition technique, suffers from very low deposition rates. In this work, we reveal that high deposition rates can lead to carbon flakes depositing into the perovskite absorber layers due to material ...
Thomas Feeney   +13 more
wiley   +1 more source

Progresses in Synthesis of Polycarboxylate Superplasticizer

open access: yesAdvances in Civil Engineering, 2020
The prerequisite to synthesize PCE was to prepare new macromonomers with controlled molecular mass, adjustable hydrophilic-lipophilic groups, long-chain alkyl groups, and large terminal hydroxyl groups as well.
Shuncheng Xiang, Yingli Gao, Caijun Shi
doaj   +1 more source

Can Polymer Solar Cells Open the Path to Sustainable and Efficient Photovoltaic Windows Fabrication? [PDF]

open access: yes, 2019
Sunlight is among the most abundant energy sources available on our planet. Finding adequate solutions to properly and efficiently harvest it is of major importance to potentially solve the global energy crisis.
Cao Y., Carswell D. J.
core   +2 more sources

Spectrally Tunable 2D Material‐Based Infrared Photodetectors for Intelligent Optoelectronics

open access: yesAdvanced Functional Materials, EarlyView.
Intelligent optoelectronics through spectral engineering of 2D material‐based infrared photodetectors. Abstract The evolution of intelligent optoelectronic systems is driven by artificial intelligence (AI). However, their practical realization hinges on the ability to dynamically capture and process optical signals across a broad infrared (IR) spectrum.
Junheon Ha   +18 more
wiley   +1 more source

DISTRIBUIÇÃO DE RENDA E DESENVOLVIMENTO ECONÔMICO: ANÁLISE DA HIPÓTESE DE KUZNETS PARA OS ESTADOS BRASILEIROS NO PERÍODO 1992-2010

open access: yesRevista Brasileira de Estudos Regionais e Urbanos, 2017
O presente trabalho tem como objetivo verificar a existência de um padrão linear ou não na relação entre desigualdade e desenvolvimento econômico nas vinte e seis unidades federativas brasileiras durante o período 1992-2010.
Moisés Pais dos Santos   +2 more
doaj  

Efficient NiOx Hole Transport Layers Enabled by Multifunctional MXenes for High‐Performance Tin‐Lead Perovskite Solar Cells

open access: yesAdvanced Functional Materials, EarlyView.
An efficient NiOx HTL is successfully prepared by introducing MXene as an additive without further surface modification to fabricate high‐performance FASn0.5Pb0.5I3 perovskite solar cells. The introduction of MXene contributes to improved conductivity of NiOx, better aligned at NiOx/perovskite interfaces, and enhanced quality of perovskite films ...
Lijun Chen   +12 more
wiley   +1 more source

Perubahan Nilai Ekivalensi Mobil Penumpang Akibat Perubahan Karakteristik Operasional Kendaraan di Jalan Kota Semarang

open access: yesMedia Komunikasi Teknik Sipil, 2017
Passenger Car Equivalent (PCE) is a conversion factor to make equal the various types of vehicles that operating on the road section into one type of vehicles i.e. passenger cars.
EPF. Eko Yulipriyono, Djoko Purwanto
doaj   +1 more source

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