Charge Separation from an Intra-Moiety Intermediate State in the High-Performance PM6:Y6 Organic Photovoltaic Blend

2020 ◽  
Vol 142 (29) ◽  
pp. 12751-12759 ◽  
Author(s):  
Rui Wang ◽  
Chunfeng Zhang ◽  
Qian Li ◽  
Zhiguo Zhang ◽  
Xiaoyong Wang ◽  
...  
Keyword(s):  
Intermediate State ◽  
Charge Separation ◽  
High Performance ◽  
Organic Photovoltaic

scholarly journals Carbon Nanodots as a Potential Transport Layer for Boosting Performance of All-Inorganic Perovskite Nanocrystals-based Photodetector

Crystals ◽  
2021 ◽  
Vol 11 (6) ◽  
pp. 717
Author(s):  
Hassan Algadi ◽  
Ahmad Umar ◽  
Hasan Albargi ◽  
Turki Alsuwian ◽  
Sotirios Baskoutas
Keyword(s):  
Charge Separation ◽  
High Performance ◽  
Band Alignment ◽  
Transport Layer ◽  
Carbon Nanodots ◽  
Separation Mechanism ◽  
Perovskite Layer ◽  
Inorganic Perovskite ◽  
Highly Efficient ◽  
Efficient Charge

A low-cost and simple drop-casting method was used to fabricate a carbon nanodot (C-dot)/all-inorganic perovskite (CsPbBr3) nanosheet bilayer heterojunction photodetector on a SiO2/Si substrate. The C-dot/perovskite bilayer heterojunction photodetector shows a high performance with a responsivity (R) of 1.09 A/W, almost five times higher than that of a CsPbBr3-based photodetector (0.21 A/W). In addition, the hybrid photodetector exhibits a fast response speed of 1.318/1.342 µs and a highly stable photocurrent of 6.97 µA at 10 V bias voltage. These figures of merits are comparable with, or much better than, most reported perovskite heterojunction photodetectors. UV–Vis absorption and photoluminescent spectra measurements reveal that the C-dot/perovskite bilayer heterojunction has a band gap similar to the pure perovskite layer, confirming that the absorption and emission in the bilayer heterojunction is dominated by the top layer of the perovskite. Moreover, the emission intensity of the C-dot/perovskite bilayer heterojunction is less than that of the pure perovskite layer, indicating that a significant number of charges were extracted by the C-dot layer. The studied band alignment of the C-dots and perovskites in the dark and under emission reveals that the photodetector has a highly efficient charge separation mechanism at the C-dot/perovskite interface, where the recombination rate between photogenerated electrons and holes is significantly reduced. This highly efficient charge separation mechanism is the main reason behind the enhanced performance of the C-dot/perovskite bilayer heterojunction photodetector.

scholarly journals Improved Morphology of Poly(3,4-ethylenedioxythiophene):Poly(styrenesulfonate) Thin Films for All-Electrospray-Coated Organic Photovoltaic Cells

2016 ◽  
Vol 2016 ◽  
pp. 1-8 ◽  
Author(s):  
Yingjie Liao ◽  
Takeshi Fukuda ◽  
Norihiko Kamata
Keyword(s):  
Thin Films ◽  
High Performance ◽  
Photovoltaic Cells ◽  
Spray Coating ◽  
Organic Photovoltaic ◽  
Organic Photovoltaic Cells ◽  
Ambient Conditions ◽  
Deposition Parameters ◽  
Coating Methods ◽  
Organic Devices

Spray coating technique has been established as a promising substitute for the traditional coating methods in the fabrication of organic devices in many reports recently. Control of film morphology at the microscopic scale is critical if spray-coated devices are to achieve high performance. Here we investigate electrospray deposition protocols for the fabrication of poly(3,4-ethylenedioxythiophene):poly(styrenesulfonate) (PEDOT:PSS) thin films with a single additive system under ambient conditions at room temperature. Critical deposition parameters including solution composition, applied voltage, and relative humidity are discussed systematically. Optimized process for preparing homogenous PEDOT:PSS thin films is applied to all-electrospray-coated organic photovoltaic cells and contributes to a power conversion efficiency comparable to that of the corresponding all-spin-coated device.

V-rich Bi2S3 nanowire with efficient charge separation and transport for high-performance and robust photoelectrochemical application under visible light

2020 ◽  
Vol 350 ◽  
pp. 47-55
Author(s):  
Yuan-Yuan Geng ◽  
Chun-Lan Tao ◽  
Shi-Fang Duan ◽  
Jovan San Martin ◽  
Yixiong Lin ◽  
...  
Keyword(s):  
Visible Light ◽  
Charge Separation ◽  
High Performance ◽  
Efficient Charge

scholarly journals Design and modification of three-component randomly incorporated copolymers for high performance organic photovoltaic applications

2013 ◽  
Vol 4 (3) ◽  
pp. 804-811 ◽  
Author(s):  
Jun Li ◽  
Kok-Haw Ong ◽  
Prashant Sonar ◽  
Siew-Lay Lim ◽  
Ging-Meng Ng ◽  
...  
Keyword(s):  
High Performance ◽  
Organic Photovoltaic ◽  
Photovoltaic Applications

Constructing efficient organic photovoltaic devices with a spirobifluorene based water/alcohol-soluble cathode interlayer

2018 ◽  
Vol 42 (11) ◽  
pp. 8960-8967 ◽  
Author(s):  
Yang Miao ◽  
Yincai Xu ◽  
Yuewei Zhang ◽  
Xianju Yan ◽  
Kaiqi Ye ◽  
...  
Keyword(s):  
Solar Cells ◽  
High Performance ◽  
Polymer Solar Cells ◽  
Organic Photovoltaic ◽  
Photovoltaic Devices ◽  
Organic Photovoltaic Devices ◽  
High Performance Polymer ◽  
Cathode Interlayer ◽  
Water Alcohol

Water/alcohol-soluble 3D-structured spirobifluorene based cathode interlayers (CILs) were synthesized and employed to fabricate high performance polymer solar cells (PSCs).

High-Performance Nonfullerene Organic Photovoltaic Cells Using a TPD-Based Wide Bandgap Donor Polymer

2019 ◽  
Vol 2 (8) ◽  
pp. 5692-5697 ◽  
Author(s):  
Jong Baek Park ◽  
Jong-Woon Ha ◽  
In Hwan Jung ◽  
Do-Hoon Hwang
Keyword(s):  
High Performance ◽  
Photovoltaic Cells ◽  
Wide Bandgap ◽  
Organic Photovoltaic ◽  
Organic Photovoltaic Cells

High-Performance Organic Photovoltaic Devices Using a New Amorphous Molecular Material with High Hole Drift Mobility, Tris[4-(5-phenylthiophen-2-yl)phenyl]amine

2009 ◽  
Vol 19 (24) ◽  
pp. 3948-3955 ◽  
Author(s):  
Hiroshi Kageyama ◽  
Hitoshi Ohishi ◽  
Masatake Tanaka ◽  
Yutaka Ohmori ◽  
Yasuhiko Shirota
Keyword(s):  
High Performance ◽  
Drift Mobility ◽  
Organic Photovoltaic ◽  
Photovoltaic Devices ◽  
Organic Photovoltaic Devices ◽  
Molecular Material
Sign in / Sign up

Export Citation Format

Share Document