Suppressing Subnanosecond Bimolecular Charge Recombination in a High-Performance Organic Photovoltaic Material

2016 ◽  
Vol 120 (42) ◽  
pp. 24002-24010 ◽  
Author(s):  
Kyra N. Schwarz ◽  
Paul B. Geraghty ◽  
David J. Jones ◽  
Trevor A. Smith ◽  
Kenneth P. Ghiggino
Keyword(s):  
High Performance ◽  
Charge Recombination ◽  
Organic Photovoltaic ◽  
Photovoltaic Material

scholarly journals Effect of Annealing on Exciton Diffusion in a High Performance Small Molecule Organic Photovoltaic Material

2017 ◽  
Vol 9 (17) ◽  
pp. 14945-14952 ◽  
Author(s):  
Yun Long ◽  
Gordon J. Hedley ◽  
Arvydas Ruseckas ◽  
Mithun Chowdhury ◽  
Thomas Roland ◽  
...  
Keyword(s):  
Small Molecule ◽  
High Performance ◽  
Organic Photovoltaic ◽  
Exciton Diffusion ◽  
Photovoltaic Material

ORGANIC (1).pdf

2017 ◽  
Author(s):  
Benjamin Sanchez-Lengeling ◽  
Carlos Outeiral ◽  
Gabriel L. Guimaraes ◽  
Alan Aspuru-Guzik
Keyword(s):  
Machine Learning ◽  
Learning Community ◽  
Chemical Species ◽  
Material Design ◽  
Organic Photovoltaic ◽  
Generative Adversarial Networks ◽  
Generative Adversarial Network ◽  
Adversarial Network ◽  
Adversarial Networks ◽  
Photovoltaic Material

Molecular discovery seeks to generate chemical species tailored to very specific needs. In this paper, we present ORGANIC, a framework based on Objective-Reinforced Generative Adversarial Networks (ORGAN), capable of producing a distribution over molecular space that matches with a certain set of desirable metrics. This methodology combines two successful techniques from the machine learning community: a Generative Adversarial Network (GAN), to create non-repetitive sensible molecular species, and Reinforcement Learning (RL), to bias this generative distribution towards certain attributes. We explore several applications, from optimization of random physicochemical properties to candidates for drug discovery and organic photovoltaic material design.

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.

scholarly journals ZnS/SiO2 Passivation Layer for High-Performance of TiO2/CuInS2 Quantum Dot Sensitized Solar Cells

Energies ◽  
2018 ◽  
Vol 11 (8) ◽  
pp. 1931
Author(s):  
Hee-Je Kim ◽  
Jin-Ho Bae ◽  
Hyunwoong Seo ◽  
Masaharu Shiratani ◽  
Chandu Venkata Veera Muralee Gopi
Keyword(s):  
Solar Cells ◽  
Quantum Dot ◽  
High Performance ◽  
Open Circuit Voltage ◽  
Charge Recombination ◽  
Open Circuit ◽  
Passivation Layer ◽  
Voltage Decay ◽  
Sensitized Solar Cells ◽  
Η Value

Suppressing the charge recombination at the interface of photoanode/electrolyte is the crucial way to improve the quantum dot sensitized solar cells (QDSSCs) performance. In this scenario, ZnS/SiO2 blocking layer was deposited on TiO2/CuInS2 QDs to inhibit the charge recombination at photoanode/electrolyte interface. As a result, the TiO2/CuInS2/ZnS/SiO2 based QDSSCs delivers a power conversion efficiency (η) value of 4.63%, which is much higher than the TiO2/CuInS2 (2.15%) and TiO2/CuInS2/ZnS (3.23%) based QDSSCs. Impedance spectroscopy and open circuit voltage decay analyses indicate that ZnS/SiO2 passivation layer on TiO2/CuInS2 suppress the charge recombination at the interface of photoanode/electrolyte and enhance the electron lifetime.

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).

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