Results 131 to 140 of about 380,947 (342)

Uncovering the Origin of Efficiency Roll‐Off in TADF OLEDs

Advanced Functional Materials, EarlyView.
OLEDs based on thermally activated delayed fluorescent (TADF) materials often suffer from a severe drop in efficiency at high brightness levels. This work presents a technique to uncover the source of this efficiency drop, and quantifies the exciton‐exciton and exciton‐polaron annihilation processes responsible for efficiency losses in our TADF OLEDs ...
Liam G. King, Kou Yoshida, Arvydas Ruseckas, Ifor D. W. Samuel   +3 more
wiley   +1 more source

Thermally Triggered Interface for Simplified Organic Solar Cells

Advanced Photonics Research
Organic photovoltaic (OPV) cells are commonly produced by successive printing of four layers on top of a transparent conducting electrode, with the active layer sandwiched in between interlayers followed by the top electrode.
Suwapat Kongsabay, Gilles Henri Roche, Olivier Dautel, Vinich Promarak, Guillaume Wantz   +4 more
doaj   +1 more source

Design, synthesis and theoretical simulations of novel spiroindane-based enamines as p-type semiconductors

Royal Society Open Science
The search for novel classes of hole-transporting materials (HTMs) is a very important task in advancing the commercialization of various photovoltaic devices.
Sarune Daskeviciute-Geguziene, Maryte Daskeviciene, Kristina Kantminienė, Vygintas Jankauskas, Egidijus Kamarauskas, Alytis Gruodis, Smagul Karazhanov, Vytautas Getautis   +7 more
doaj   +1 more source

Improving Electron Extraction Ability and Device Stability of Perovskite Solar Cells Using a Compatible PCBM/AZO Electron Transporting Bilayer

Nanomaterials, 2018
Due to the low temperature fabrication process and reduced hysteresis effect, inverted p-i-n structured perovskite solar cells (PSCs) with the PEDOT:PSS as the hole transporting layer and PCBM as the electron transporting layer have attracted ...
Hang Dong, Shangzheng Pang, Yi Zhang, Dazheng Chen, Weidong Zhu, He Xi, Jingjing Chang, Jincheng Zhang, Chunfu Zhang, Yue Hao   +9 more
doaj   +1 more source

Site-specific probing of charge transfer dynamics in organic photovoltaics

, 2015
We report the site-specific probing of charge-transfer dynamics in a prototype system for organic photovoltaics (OPV) by picosecond time-resolved X-ray photoelectron spectroscopy.
Arion, Tiberiu, Bluhm, Hendrik, Eberhardt, Wolfgang, Gessner, Oliver, Hussain, Zahid, Nepp, Stefan, Roth, Friedrich, Shavorskiy, Andrey   +7 more
core   +1 more source

Trifluoromethoxylated Electron Acceptor Enabling Ternary Organic Solar Cells with over 20% Power Conversion Efficiency

Advanced Functional Materials, EarlyView.
ABSTRACT In this work, we introduce a trifluoromethoxy (OCF3) group as a pseudo‐halogen terminal group design for non‐fullerene acceptors, which combines strong inductive electron‐withdrawing ability with moderate resonance donation. The as‐synthesized BTP‐OCF3, when benchmarked against its methoxy analogue BTP‐OCH3, demonstrates narrowed bandgap ...
Chunliang Li, Anhai Liang, Shuwei Qiu, Gavin Ho Ming Ng, Aleksandr Sergeev, Joshua Yuk Lin Lai, Bosen Zou, Xianghao Zeng, Jicheng Yi, Hongxiang Li, Junpo Guo, Wei Liu, Jia Yao, Kam Sing Wong, Zhipeng Kan, Sai Ho Pun, He Yan   +16 more
wiley   +1 more source

Thermal Analysis of Metal-Organic Precursors for Functional Cu:ΝiOx Hole Transporting Layer in Inverted Perovskite Solar Cells: Role of Solution Combustion Chemistry in Cu:ΝiOx Thin Films Processing. [PDF]

Nanomaterials (Basel), 2021
Ioakeimidis A, Papadas IT, Koutsouroubi ED, Armatas GS, Choulis SA.   +4 more
europepmc   +1 more source

Synergistic All‐in‐One Electroceutical Platform Utilizing a Plasma–Photodynamic Hybrid Approach for Enhanced Wound Healing

Advanced Functional Materials, EarlyView.
A flexible hybrid patch integrating a robust cold atmospheric plasma (CAP) system with a high‐power, ultrathin bio‐OLED was developed to enable synergistic wound healing. This multimodal therapy, combining plasma and photodynamic treatment, enhanced angiogenesis, cell proliferation, and collagen deposition, demonstrating superior in vivo efficacy and ...
Jun‐Yeop Song, Hyun Cheol Bang, Young Hyun Son, Dae‐In Ha, Eun‐Ju Hong, Sun‐Woo Lee, Jeongsook Kim, Doyeong Kim, Sang‐Min Park, Kyu Pil Lee, Hyo‐Jung Kwon, Jeong Hyun Kwon   +11 more
wiley   +1 more source

Bistable Amphoteric Native Defect Model of Perovskite Photovoltaics

, 2018
The past few years have witnessed unprecedented rapid improvement of the performance of a new class of photovoltaics based on halide perovskites. This progress has been achieved even though there is no generally accepted mechanism of the operation of ...
Asta, M. D., Broberg, D., Han, G., Jaquez, M., Mathews, N., Rey-Stolle, I., Sherburne, M, Walukiewicz, W., Xie, W.   +8 more
core   +2 more sources

Metal–Organic Frameworks for Gaseous Pollutant Management: From Capture to Neutralization and Reutilization

Advanced Functional Materials, EarlyView.
This review maps how MOFs can manage hazardous gases by combining adsorption, neutralization, and reutilization, enabling sustainable air‐pollution control. Covering chemical warfare agent simulants, SO2, NOx, NH3, H2S, and volatile organic compounds, it highlights structure‐guided strategies that boost selectivity, water tolerance, and cycling ...
Yuanmeng Tian, Zeyu Tao, Kaikai Ma, Xiaoliang Wang, Bo Yu, Yiu Wan Yip, Zhijie Chen, Jin Shang, Bin Fei   +8 more
wiley   +1 more source