نتایج جستجو برای: photovoltage curves

تعداد نتایج: 93972  

Journal: :Physica Status Solidi (rrl) 2021

For solar cells operating under the broad-band spectrum, photovoltaic conversion efficiency is fundamentally limited by transmission and thermalization losses. monochromatic light, these losses can be minimized matching photon energy absorber material's bandgap energy. Furthermore, for high-crystal-quality direct semiconductors, radiative recombination dominates minority carrier recombination. ...

2014
Lilach Bareket Nir Waiskopf David Rand Gur Lubin Moshe David-Pur Jacob Ben-Dov Soumyendu Roy Cyril Eleftheriou Evelyne Sernagor Ori Cheshnovsky Uri Banin Yael Hanein

We report the development of a semiconductor nanorod-carbon nanotube based platform for wire-free, light induced retina stimulation. A plasma polymerized acrylic acid midlayer was used to achieve covalent conjugation of semiconductor nanorods directly onto neuro-adhesive, three-dimensional carbon nanotube surfaces. Photocurrent, photovoltage, and fluorescence lifetime measurements validate effi...

Journal: :Physical chemistry chemical physics : PCCP 2010
Liyang Luo Chia-Jung Lin Chen-Shiung Hung Chen-Fu Lo Ching-Yao Lin Eric Wei-Guang Diau

For dye-sensitized solar-cell devices fabricated from porphyrin sensitizers with links of varied length (PE1-PE4) adsorbed on anodic titanium-oxide nanotube arrays, we measured induced photocurrent and photovoltage decays under constant bias illumination; the evaluated efficiencies of charge collection of the devices show a systematic trend PE4 > PE3 > PE2 > PE1 at a large short-circuit current...

Journal: :Chemical communications 2015
Jeung Yoon Kim Won Seok Yun Ho-Jin Son JaeDong Lee Nak Cheon Jeong

A primitive version of a ruthenium complex [Ru(bpy)3(2+)] was employed for the first time as a new conceptual "single-component redox shuttle" for dye-sensitized solar cells. This single shuttle led to a large enhancement of the open-circuit photovoltage (VOC) to ∼940 mV relative to that of conventional iodine-based shuttle and greatly increased the efficiency of the solar-to-electric energy co...

Journal: :Chemical communications 2017
Dekai Zhou Liqiang Ren Yuguang C Li Pengtao Xu Yuan Gao Guangyu Zhang Wei Wang Thomas E Mallouk Longqiu Li

We report the synthesis and properties of rod-shaped gold/iron oxide nanomotors that are powered by visible light in dilute hydrogen peroxide solutions. Electrochemical measurements confirmed that the light-driven nanomotors operate by a self-electrophoretic mechanism, modulated by the photovoltage and the photoconductivity of gold/iron oxide. Due to the magnetism of iron oxide, the nanomotors ...

2015
Ken A. Nagamatsu Sushobhan Avasthi Girija Sahasrabudhe Gabriel Man Janam Jhaveri Alexander H. Berg Jeffrey Schwartz Antoine Kahn Sigurd Wagner James C. Sturm

Articles you may be interested in High efficiency sequentially vapor grown n-i-p CH3NH3PbI3 perovskite solar cells with undoped P3HT as p-type heterojunction layer Carrier recombination losses in inverted polymer: Fullerene solar cells with ZnO hole-blocking layer from transient photovoltage and impedance spectroscopy techniques High efficiency double heterojunction polymer photovoltaic cells u...

Journal: :Science 2006
Daniel A Bernards Samuel Flores-Torres Héctor D Abruña George G Malliaras

Electronic devices primarily use electronic rather than ionic charge carriers. Using soft-contact lamination, we fabricated ionic junctions between two organic semiconductors with mobile anions and cations, respectively. Mobile ionic charge was successfully deployed to control the direction of electronic current flow in semiconductor devices. As a result, these devices showed electroluminescenc...

Journal: :Physical chemistry chemical physics : PCCP 2016
Lei Zhang Gerrit Boschloo Leif Hammarström Haining Tian

Solid state p-type dye-sensitized solar cells (p-ssDSCs) have been proposed and fabricated for the first time, using the organic dye P1 as the sensitizer on mesoporous NiO and phenyl-C61-butyric acid methyl ester (PCBM) as the electron conductor. The p-ssDSC has shown an impressive open circuit photovoltage of 620 mV. Femtosecond and nanosecond transient absorption spectroscopy has given eviden...

Journal: :Physical review letters 2004
I V Kukushkin M Yu Akimov J H Smet S A Mikhailov K von Klitzing I L Aleiner V I Falko

We observe a new type of magneto-oscillations in the photovoltage and the longitudinal resistance of a two-dimensional electron system. The oscillations are induced by microwave radiation and are periodic in magnetic field. The period is determined by the microwave frequency, the electron density, and the distance between potential probes. The phenomenon is accounted for by interference of cohe...

2001
Leeor Kronik Yoram Shapira

The possibility of obtaining a detailed picture of the electronic structure makes surface photovoltage spectroscopy (SPS) eminently suitable for bridging the gap between the chemical, physical, optical and electrical properties of semiconductors. In SPS, changes in band bending (both at the free semiconductor surface and at buried interfaces) are monitored as a function of external illumination...

نمودار تعداد نتایج جستجو در هر سال

با کلیک روی نمودار نتایج را به سال انتشار فیلتر کنید