scholarly journals Ultrasonically Processed WSe2 Nanosheets Blended Bulk Heterojunction Active Layer for High-Performance Polymer Solar Cells and X-ray Detectors

Materials ◽  
2021 ◽  
Vol 14 (12) ◽  
pp. 3206
Author(s):  
Hailiang Liu ◽  
Sajjad Hussain ◽  
Jehoon Lee ◽  
Dhanasekaran Vikraman ◽  
Jungwon Kang
Keyword(s):  
Solar Cells ◽  
Active Layer ◽  
High Performance ◽  
Polymer Solar Cells ◽  
Photovoltaic Performance ◽  
Acid Methyl Ester ◽  
High Mobility ◽  
Transition Metal Dichalcogenide ◽  
X Ray ◽  
Photoelectric Properties

Two-dimensional (2D) tungsten diselenide (WSe2) has attracted considerable attention in the field of photovoltaic devices owing to its excellent structure and photoelectric properties, such as ordered 2D network structure, high electrical conductivity, and high mobility. For this test, we firstly prepared different sizes (NS1–NS3) of WSe2 nanosheets (NSs) through the ultrasonication method and characterized their structures using the field emission scanning electron microscope (FE-SEM), Raman spectroscopy, and X-ray powder diffraction. Moreover, we investigated the photovoltaic performance of polymer solar cells based on 5,7-Bis(2-ethylhexyl)benzo[1,2-c:4,5-c′]dithiophene-4,8-dione(PBDB-T):(6,6)-phenyl-C71 butyric acid methyl ester (PCBM) with different WSe2 NSs as the active layer. The fabricated PBDB-T:PCBM active layer with the addition of NS2 WSe2 NSs (1.5 wt%) exhibited an improved power conversion efficiency (PCE) of 9.2%, which is higher than the pure and NS1 and NS3 WSe2 blended active layer-encompassing devices. The improved PCE is attributed to the synergic enhancement of exciton dissociation and an improvement in the charge mobility through the modified active layer for polymer solar cells. Furthermore, the highest sensitivity of 2.97 mA/Gy·cm2 was achieved for the NS2 WSe2 NSs blended active layer detected by X-ray exposure over the pure polymer, and with the NS1 and NS2 WSe2 blended active layer. These results led to the use of transition metal dichalcogenide materials in polymer solar cells and X-ray detectors.

Theoretical Study on Electronic Structures and Spectroscopic Properties of Indene-C60 Monoadduct (ICMA)

2012 ◽  
Vol 535-537 ◽  
pp. 1287-1290
Author(s):  
Zhan Chun Xu ◽  
Hong Sen Zhang ◽  
Zhe Li ◽  
Xue Shun Yang ◽  
Gang Zhang
Keyword(s):  
Solar Cells ◽  
Electronic Structures ◽  
High Performance ◽  
Density Functional ◽  
Polymer Solar Cells ◽  
Carbon Number ◽  
Photovoltaic Performance ◽  
Acid Methyl Ester ◽  
Spectroscopic Properties ◽  
Frontier Molecular Orbital

ICMA and its derivatives, high performance acceptor of polymer solar cells, have received most attention in experimental and theoretical studies. In this work, we calculated electronic structures and spectroscopic properties of the ICMA by density functional theory (DFT) using B3LYP method. The geometrical structure data show that indene has little influence on C60. In comparison with [6,6]-phenyl C61-butyric acid methyl ester (PCBM), It was proved theoretically that ICMA possesses a better photovoltaic performance and higher LUMO energy level. ICMA and its derivatives could be a promising new acceptor which further improve the power conversion efficiency of the high performance polymer solar cells. The research indicates that the frontier molecular orbital are mainly localized on the C60 sphere, which shows carbon number of cage is an important factor leading to the change of optical and electrical properties. The present study provides theoretical supporting for further application of the ICMA and its derivatives in molecular design and structure-activity relationships research.

scholarly journals Enhanced Power Conversion Efficiency of P3HT : PC71BM Bulk Heterojunction Polymer Solar Cells by Doping a High-Mobility Small Organic Molecule

2015 ◽  
Vol 2015 ◽  
pp. 1-8 ◽  
Author(s):  
Hanyu Wang ◽  
Xiao Wang ◽  
Pu Fan ◽  
Xin Yang ◽  
Junsheng Yu
Keyword(s):  
Solar Cells ◽  
Power Conversion Efficiency ◽  
Conversion Efficiency ◽  
Polymer Solar Cells ◽  
Short Circuit ◽  
Power Conversion ◽  
Photovoltaic Performance ◽  
Acid Methyl Ester ◽  
High Mobility ◽  
Short Circuit Current

The effect of molecular doping with TIPS-pentacene on the photovoltaic performance of polymer solar cells (PSCs) with a structure of ITO/ZnO/poly(3-hexylthiophene-2,5-diyl) (P3HT) : [6,6]-phenyl C71-butyric acid methyl ester (PC71BM) : TIPS-pentacene/MoOx/Ag was systematically investigated by adjusting TIPS-pentacene doping ratios ranged from 0.3 to 1.2 wt%. The device with 0.6 wt% TIPS-pentacene exhibited the enhanced short-circuit current and fill factor by 1.23 mA/cm2and 7.8%, respectively, resulting in a maximum power conversion efficiency of 4.13%, which is one-third higher than that of the undoped one. The photovoltaic performance improvement was mainly due to the balanced charge carrier mobility, enhanced crystallinity, and matched cascade energy level alignment in TIPS-pentacene doped active layer, resulting in the efficient charge separation, transport, and collection.

Regulation of the Miscibility of the Active Layer by Random Terpolymer Acceptors to Realize High-Performance All-Polymer Solar Cells

2021 ◽  
Vol 3 (4) ◽  
pp. 1923-1931
Author(s):  
Dong Chen ◽  
Siqi Liu ◽  
Jinliang Liu ◽  
Jihui Han ◽  
Lie Chen ◽  
...  
Keyword(s):  
Solar Cells ◽  
Active Layer ◽  
High Performance ◽  
Polymer Solar Cells

Quaternisation-polymerized N-type polyelectrolytes: synthesis, characterisation and application in high-performance polymer solar cells

2017 ◽  
Vol 4 (1) ◽  
pp. 88-97 ◽  
Author(s):  
Zhicheng Hu ◽  
Rongguo Xu ◽  
Sheng Dong ◽  
Kai Lin ◽  
Jinju Liu ◽  
...  
Keyword(s):  
Solar Cells ◽  
High Performance ◽  
Polymer Solar Cells ◽  
High Mobility ◽  
High Performance Polymer

We design and synthesize a series of high-mobility n-type polyelectrolytes with different anions via quaternisation polymerisation, which can be utilized as thickness-insensitive electron-transporting materials for polymer solar cells.

Regulating active layer thickness and morphology for high performance hot-casted polymer solar cells

2020 ◽  
Vol 8 (24) ◽  
pp. 8191-8198
Author(s):  
Ritesh Kant Gupta ◽  
Rabindranath Garai ◽  
Mohammad Adil Afroz ◽  
Parameswar Krishnan Iyer
Keyword(s):  
Solar Cells ◽  
Solar Cell ◽  
Layer Thickness ◽  
Active Layer ◽  
High Performance ◽  
Carrier Mobility ◽  
Polymer Solar Cells ◽  
Active Layer Thickness ◽  
Casting Technique ◽  
High Performance Polymer

Fabrication of high performance polymer solar cells through the hot-casting technique, which modulates the thickness and roughness of the active layer and also the carrier mobility of the solar cell devices.

Enhanced efficiency and stability of nonfullerene ternary polymer solar cells based on a spontaneously assembled active layer: the role of a high mobility small molecular electron acceptor

2020 ◽  
Vol 8 (18) ◽  
pp. 6196-6202 ◽  
Author(s):  
Dou Luo ◽  
Ming Zhang ◽  
Jian-Bin Li ◽  
Zuo Xiao ◽  
Feng Liu ◽  
...  
Keyword(s):  
Thermal Stability ◽  
Solar Cells ◽  
Solar Cell ◽  
Active Layer ◽  
Electron Acceptor ◽  
Polymer Solar Cells ◽  
High Mobility ◽  
Molecular Electron ◽  
Ternary Polymer

Introducing a medium bandgap electron acceptor into the PTB7-Th:COi8DFIC solar cell increases both thermal stability and PCE without external treatments.

Flexible-Spacer Incorporated Polymer Donors Enable Superior Blend Miscibility for High-Performance and Mechanically-Robust Polymer Solar Cells

2021 ◽  
Author(s):  
Jin-Woo Lee ◽  
Dahyun Jeong ◽  
Dong Jun Kim ◽  
Tan Ngoc-Lan Phan ◽  
Jin Su Park ◽  
...  
Keyword(s):  
Solar Cells ◽  
High Performance ◽  
Polymer Solar Cells ◽  
Photovoltaic Performance ◽  
Operational Reliability ◽  
Wearable Devices ◽  
Flexible Spacer

Developing polymer solar cells (PSCs) with high photovoltaic performance and mechanical robustness is one of the most urgent tasks to ensure their operational reliability and applicability in wearable devices. However,...

Insertion of double bond π-bridges of A–D–A acceptors for high performance near-infrared polymer solar cells

2017 ◽  
Vol 5 (43) ◽  
pp. 22588-22597 ◽  
Author(s):  
Xiaojun Li ◽  
Tinghai Yan ◽  
Haijun Bin ◽  
Guangchao Han ◽  
Lingwei Xue ◽  
...  
Keyword(s):  
Solar Cells ◽  
Double Bond ◽  
High Performance ◽  
Near Infrared ◽  
Polymer Solar Cells ◽  
Photovoltaic Performance ◽  
Broad Absorption ◽  
Low Bandgap ◽  
Donor And Acceptor

A low bandgap n-OS molecule SJ-IC was synthesized by inserting double bond π-bridges between the donor and acceptor units of IDT-IC, and SJ-IC as an acceptor shows broad absorption and improved photovoltaic performance when using a broad bandgap polymer J61 as a donor.

Sign in / Sign up

Export Citation Format

Share Document