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https://www.readbyqxmd.com/read/29468852/dye-incorporated-polynaphthalenediimide-acceptor-for-additive-free-high-performance-all-polymer-solar-cells
#1
Dong Chen, Jia Yao, Jingping Yin, Ruizhi Lv, Bin Huang, Siqi Liu, Chunhe Yang, Zhiguo Zhang, Lie Chen, Yiwang Chen, Yongfang Li
All-polymer solar cells (all-PSCs) can offer unique advantages for applications in flexible devices, and naphthalene diimide (NDI)-based polymer acceptors are the widely used polymer acceptors. However, their power conversion efficiency (PCE) still lags behind that of state-of-the-art polymer solar cells, due to low light absorption, suboptimal energy levels and the strong aggregation of the NDI-based polymer acceptor. In this work, by means of simple random copolymerization, a rhodanine-based dye molecule was introduced into the NDI-based polymer acceptor and showed an improved light absorption coefficient, an up-shifted lowest unoccupied molecular orbital level and reduced crystallization...
February 22, 2018: Angewandte Chemie
https://www.readbyqxmd.com/read/29467393/a-low-cost-and-high-performance-polymer-donor-material-for-polymer-solar-cells
#2
Chenkai Sun, Fei Pan, Haijun Bin, Jianqi Zhang, Lingwei Xue, Beibei Qiu, Zhixiang Wei, Zhi-Guo Zhang, Yongfang Li
The application of polymer solar cells requires the realization of high efficiency, high stability, and low cost devices. Here we demonstrate a low-cost polymer donor poly[(thiophene)-alt-(6,7-difluoro-2-(2-hexyldecyloxy)quinoxaline)] (PTQ10), which is synthesized with high overall yield of 87.4% via only two-step reactions from cheap raw materials. More importantly, an impressive efficiency of 12.70% is obtained for the devices with PTQ10 as donor, and the efficiency of the inverted structured PTQ10-based device also reaches 12...
February 21, 2018: Nature Communications
https://www.readbyqxmd.com/read/29466008/raman-microscopy-insights-on-the-out-of-plane-electrical-transport-of-carbon-nanotube-doped-pedot-pss-electrodes-for-solar-cell-applications
#3
Dominique Mombrú, Mariano Romero, Ricardo Faccio, Alvaro W Mombrú
In the present report, we focused on the study of the out-of-plane electrical transport of multiwalled carbon nanotube (MWCNT)-doped poly(3,4-ethylenedioxythiophene):poly(styrene sulfonate) composites (PEDOT:PSS-MWCNTs) as electrodes for solar cell applications. The out-of-plane direct current and alternating current electrical transport, rarely studied but not less relevant, was additionally supported with in-plane and out-of-plane confocal Raman microscopy and grazing incidence small-angle X-ray scattering characterizations...
February 21, 2018: Journal of Physical Chemistry. B
https://www.readbyqxmd.com/read/29458607/thienoisoindigo-based-polymers-bearing-diethynylbenzene-and-diethynylanthracene-units-for-thin-film-transistors-and-solar-cells
#4
Pei Han, Xueqin Zhang, Xiaohui Gong, Hui Wen, Yidong Zhang, Baoping Lin, Lei Zhang, Shanghui Ye, Ying Sun, Hong Yang
Two thienoisoindigo-based donor-acceptor conjugated polymers were synthesized via Sonogashira coupling reaction with 1,4-diethynylbenzene (P(TII-BEN)) and 9,10-diethynylanthracene (P(TII-ANT)) as donor units, respectively. The optical and electrochemical properties of the polymers were also investigated. The highest hole mobility were 4.38 × 10-3 cm2 V-1 s-1 for P(TII-BEN) and 9.40 × 10-3 cm2 V-1 s-1 for P(TII-ANT) in bottom-gated/top-contact field-effect transistors. The bulk heterojunction organic solar cells consisting of the polymers and PC71BM yielded power conversion efficiencies of 1...
August 1, 2018: Journal of Nanoscience and Nanotechnology
https://www.readbyqxmd.com/read/29457446/roll-to-roll-printing-of-meter-scale-composite-transparent-electrodes-with-optimized-mechanical-and-optical-properties-for-photoelectronics
#5
Xiangchuan Meng, Xiaotian Hu, Xia Yang, Jingping Yin, Qingxia Wang, Liqiang Huang, Zoukangning Yu, Ting Hu, Licheng Tan, Weihua Zhou, Yiwang Chen
Flexible transparent electrodes (FTEs) are an indispensable component for flexible optoelectronic devices. In this work, the meter-scale composite transparent electrode (CTEs) composing of poly(3,4-ethylenedioxythiophene):polystyrene sulfonate (PEDOT:PSS) and Ag-grid/PET with optimized mechanical and optical properties is demonstrated by slot-die roll-to-roll technique with solution printing method under a low cost (2.8 $ for per square meter), via control of the viscosity and surface energy of PEDOT:PSS ink as well as the printing parameters...
February 19, 2018: ACS Applied Materials & Interfaces
https://www.readbyqxmd.com/read/29450928/conjugated-polyelectrolytes-bearing-various-ion-densities-spontaneous-dipole-generation-poling-induced-dipole-alignment-and-interfacial-energy-barrier-control-for-optoelectronic-device-applications
#6
Seungjin Lee, Thanh Luan Nguyen, Sang Yun Lee, Chung Hyeon Jang, Bo Ram Lee, Eui Dae Jung, Song Yi Park, Yung Jin Yoon, Jin Young Kim, Han Young Woo, Myoung Hoon Song
Conjugated polyelectrolytes (CPEs) with π-delocalized main backbones and ionic pendant groups are intensively studied as interfacial layers for efficient polymer-based optoelectronic devices (POEDs) because they facilitate facile control of charge injection/extraction barriers. Here, a simple and effective method of performing precise interfacial energy level adjustment is presented by employing CPEs with different thicknesses and various ion densities under electric poling to realize efficient charge injection/extraction of POEDs...
February 16, 2018: Advanced Materials
https://www.readbyqxmd.com/read/29449907/electrospun-conjugated-polymer-fullerene-hybrid-fibers-photoactive-blends-conductivity-through-tunneling-afm-light-scattering-and-perspective-for-their-use-in-bulk-heterojunction-organic-solar-cells
#7
Zhenhua Yang, Maria Moffa, Ying Liu, Hongfei Li, Luana Persano, Andrea Camposeo, Rosalba Saija, Maria Antonia Iatì, Onofrio M Maragò, Dario Pisignano, Chang-Yong Nam, Eyal Zussman, Miriam Rafailovich
Hybrid conjugated polymer/fullerene filaments based on MEH-PPV/PVP/PCBM were prepared by electrospinning, and their properties were assessed by scanning electron, atomic and lateral-force, tunneling, and confocal microscopies, as well as by attenuated-total-reflection Fourier transform infrared spectroscopy, photoluminescence quantum yield, and spatially resolved fluorescence. Highlighted features include the ribbon shape of the realized fibers and the persistence of a network serving as a template for heterogeneous active layers in solar cell devices...
February 8, 2018: Journal of Physical Chemistry. C, Nanomaterials and Interfaces
https://www.readbyqxmd.com/read/29445956/high-performance-of-pedot-pss-n-si-solar-cells-based-on-textured-surface-with-agnws-electrodes
#8
Xiangyu Jiang, Pengbo Zhang, Juan Zhang, Jilei Wang, Gaofei Li, Xiaohong Fang, Liyou Yang, Xiaoyuan Chen
Hybrid heterojunction solar cells (HHSCs) have gained extensive research and attention due to simple device structure and low-cost technological processes. Here, HHSCs are presented based on a highly transparent conductive polymer poly(3,4ethylenedioxythiophene):poly(styrenesulfonate)(PEDOT:PSS) directly spin-coated on an n-type crystalline silicon with microscale surface textures, which are prepared by traditional chemical etching. We have studied interface properties between PEDOT:PSS and textured n-Si by varying coating conditions...
February 14, 2018: Nanoscale Research Letters
https://www.readbyqxmd.com/read/29444103/macro-and-micro-plastics-sorb-and-desorb-metals-and-act-as-a-point-source-of-trace-metals-to-coastal-ecosystems
#9
B Munier, L I Bendell
Nine urban intertidal regions in Burrard Inlet, Vancouver, British Columbia, Canada, were sampled for plastic debris. Debris included macro and micro plastics and originated from a wide diversity of uses ranging from personal hygiene to solar cells. Debris was characterized for its polymer through standard physiochemical characteristics, then subject to a weak acid extraction to remove the metals, zinc, copper, cadmium and lead from the polymer. Recently manufactured low density polyethylene (LDPE), nylon, polyethylene terephthalate (PET), polypropylene (PP), polystyrene (PS) and polyvinyl chloride (PVC) were subject to the same extraction...
2018: PloS One
https://www.readbyqxmd.com/read/29442929/characteristics-of-molybdenum-disulfide-nanoparticles-for-heterojunction-polymer-solar-cells
#10
Kai-Peng Lin, Yu-Jen Hsiao, Te-Hua Fang, Bo-Yi Yang
We have used different molybdenum disulfide (MoS2) nanoparticle concentrations (0~10 wt%) for doping the hybrid active P3HT:PCBM layer. The root mean square (rms) roughness of the layer increased as the MoS2 nanoparticle concentration increased. The hybrid film with MoS2 has higher absorption intensity than the pristine film. The maximum power conversion efficiency (PCE) was 2.73% with 5 wt% MoS2 concentration, higher than that (2.08%) obtained without MoS2.
April 1, 2018: Journal of Nanoscience and Nanotechnology
https://www.readbyqxmd.com/read/29442439/wet-imprinting-of-channel-type-superstructures-in-nanostructured-titania-thin-films-at-low-temperatures-for-hybrid-solar-cells
#11
Lin Song, Tianyi Wang, Volker Körstgens, Weijia Wang, Nitin Saxena, Christoph J Schaffer, Thomas Fröschl, Nicola Hüsing, Sigrid Bernstorff, Peter Müller-Buschbaum
Hierarchically structured titania films, exhibiting interconnected foam-like nanostructures and large scale channel-type superstructures, are achieved in an energy saving way at low temperatures by a polymer template-assisted sol-gel synthesis in combination with a wet imprinting process. The surface morphology is probed with scanning electron microscopy and atomic force microscopy, while the inner morphology is characterized with grazing incidence small-angle x-ray scattering measurements. Compared to the initial hybrid films, the titania films showed reduced structure sizes caused by the polymer template removal...
February 14, 2018: ChemSusChem
https://www.readbyqxmd.com/read/29441786/transparent-conductive-adhesives-for-tandem-solar-cells-using-polymer-particle-composites
#12
Talysa Klein, Benjamin G Lee, Manuel Schnabel, Emily L Warren, Paul Stradins, Adele Tamboli, Maikel F A M van Hest
Transparent conductive adhesives (TCAs) can enable conductivity between two substrates, which is useful for a wide range of electronic devices. Here we have developed a TCA composed of polymer-particle blend with Ethylene-Vinyl Acetate as the transparent adhesive and metal-coated flexible Poly(Methyl Methacrylate) microspheres as the conductive particles that can provide conductivity and adhesion regardless of surface texture. This TCA layer was designed to be nearly transparent, conductive in only the out of plane direction, and of practical adhesive strength to hold substrates together...
February 14, 2018: ACS Applied Materials & Interfaces
https://www.readbyqxmd.com/read/29441781/flexible-and-micropatternable-triplet-triplet-annihilation-upconversion-thin-films-for-photonic-device-integration-and-anti-counterfeiting-applications
#13
Anna L Hagstrom, Hak-Lae Lee, Myung-Soo Lee, Hyun-Seok Choe, Joori Jung, Byung-Geon Park, Won-Sik Han, Jong Soo Ko, Jae-Hong Kim, Jaehyuk Kim
Triplet-triplet annihilation upconversion (TTA-UC) has recently drawn widespread interest for its capacity to harvest low-energy photons and to broaden the absorption spectra of photonic devices such as solar cells. Although conceptually promising, effective integration of TTA-UC materials into practical devices has been difficult due to the diffusive and anoxic conditions required in TTA-UC host media. Of the solid-state host materials investigated, rubbery polymers facilitate the highest TTA-UC efficiencies...
February 14, 2018: ACS Applied Materials & Interfaces
https://www.readbyqxmd.com/read/29438860/hole-transport-layer-based-on-conjugated-polyelectrolytes-for-polymer-solar-cells
#14
Sanghun Moon, Shubhangi Khadtare, Matthew Wong, Sung-Hwan Han, Guillermo C Bazan, Hyosung Choi
We demonstrate the conjugated polyelectrolytes (CPEs) as efficient hole transport layer (HTL) of polymer solar cells. Replacing poly(3,4-ethylenedioxy-thiophene):poly(styrenesulfonate) (PEDOT:PSS) with a CPEs with narrow bandgap results in both improvements in device efficiency and stability. In spite of their narrow bandgap, thin CPE films (thickness of ∼30 nm) enable sufficient light absorption within the active layer. Enhancement of device efficiency is attributed to low surface roughness, high transmittance in visible region, and reduced charge transfer resistance...
February 7, 2018: Journal of Colloid and Interface Science
https://www.readbyqxmd.com/read/29436082/asymmetric-alkyl-side-chain-engineering-of-naphthalene-diimide-based-n-type-polymers-for-efficient-all-polymer-solar-cells
#15
Tao Jia, Zhenye Li, Lei Ying, Jianchao Jia, Baobing Fan, Wenkai Zhong, Feilong Pan, Penghui He, Junwu Chen, Fei Huang, Yong Cao
The design and synthesis of three n-type conjugated polymers based on a naphthalene diimide-thiophene skeleton are presented. The control polymer, PNDI-2HD, has two identical 2-hexyldecyl side chains, and the other polymers have different alkyl side chains; PNDI-EHDT has a 2-ethylhexyl and a 2-decyltetradecyl side chain, and PNDI-BOOD has a 2-butyloctyl and a 2-octyldodecyl side chain. These copolymers with different alkyl side chains exhibit higher melting and crystallization temperatures, and stronger aggregation in solution, than the control copolymer PNDI-2HD that has the same side chain...
February 13, 2018: Macromolecular Rapid Communications
https://www.readbyqxmd.com/read/29436043/fusing-benzo-c-1-2-5-oxadiazole-unit-with-thiophene-for-constructing-wide-bandgap-high-performance-idt-based-polymer-solar-cell-donor-material
#16
Xin Song, Meijie Fan, Kaili Zhang, Dakang Ding, Weiye Chen, Yonghai Li, Liangmin Yu, Mingliang Sun, Renqiang Yang
Benzo[c][1,2,5]oxadiazole (BO) moiety is a strong electron-withdrawing unit compared to benzo[c][1,2,5]thiadiazole (BT). It is usually introduced as an acceptor to construct narrow band-gap donor-acceptor (D-A) materials. Herein, the π-extended conjugated moiety dithieno[3',2':3,4″;2,3″:5,6]benzo[1,2-c][1,2,5]oxadiazole (BOT) was adopted as the acceptor moiety to design D-A polymers. Considering the more extended π-conjugated molecular system of BOT compared to the BO unit, a narrower optical band-gap is expected for BOT-based IDT polymer (PIDT-BOT)...
February 13, 2018: Macromolecular Rapid Communications
https://www.readbyqxmd.com/read/29434237/unraveling-the-efficiency-limiting-morphological-issues-of-the-perylene-diimide-based-non-fullerene-organic-solar-cells
#17
Ranbir Singh, Sanjaykumar R Suranagi, Jaewon Lee, Hansol Lee, Min Kim, Kilwon Cho
Herein we report a comparative morphological analysis of the perylene diimide (PDI)- and fullerene-based organic solar cells (OSCs) to identify the factors responsible for low performance of PDI-based devices. A PDI derivative, bis-PDI, and a fullerene derivative, PC70BM, are mixed with an efficient polymer donor, PffBT4T-2OD. The large disparity in power conversion efficiencies (PCEs) of OSCs composed of PffBT4T-2OD:bis-PDI (PCE = 5.18%) and PffBT4T-2OD:PC70BM (PCE = 10.19%) observed are attributed to differences in the nanostructural motif of bulk heterojunction (BHJ) morphologies of these blend systems...
February 12, 2018: Scientific Reports
https://www.readbyqxmd.com/read/29423980/polymer-solar-cells-with-90-external-quantum-efficiency-featuring-an-ideal-light-and-charge-manipulation-layer
#18
Jing-De Chen, Yan-Qing Li, Jingshuai Zhu, Qianqian Zhang, Rui-Peng Xu, Chi Li, Yue-Xing Zhang, Jing-Sheng Huang, Xiaowei Zhan, Wei You, Jian-Xin Tang
Rapid progress in the power conversion efficiency (PCE) of polymer solar cells (PSEs) is beneficial from the factors that match the irradiated solar spectrum, maximize incident light absorption, and reduce photogenerated charge recombination. To optimize the device efficiency, a nanopatterned ZnO:Al2 O3 composite film is presented as an efficient light- and charge-manipulation layer (LCML). The Al2 O3 shells on the ZnO nanoparticles offer the passivation effect that allows optimal electron collection by suppressing charge-recombination loss...
February 9, 2018: Advanced Materials
https://www.readbyqxmd.com/read/29411431/stable-and-efficient-organo-metal-halide-hybrid-perovskite-solar-cells-via-%C3%AF-conjugated-lewis-base-polymer-induced-trap-passivation-and-charge-extraction
#19
Ping-Li Qin, Guang Yang, Zhi-Wei Ren, Sin Hang Cheung, Shu Kong So, Li Chen, Jianhua Hao, Jianhui Hou, Gang Li
High-quality pinhole-free perovskite film with optimal crystalline morphology is critical for achieving high-efficiency and high-stability perovskite solar cells (PSCs). In this study, a p-type π-conjugated polymer poly[(2,6-(4,8-bis(5-(2-ethylhexyl) thiophen-2-yl)-benzo[1,2-b:4,5-b'] dithiophene))-alt-(5,5-(1',3'-di-2-thienyl-5',7'-bis(2-ethylhexyl) benzo[1',2'-c:4',5'-c'] dithiophene-4,8-dione))] (PBDB-T) is introduced into chlorobenzene to form a facile and effective template-agent during the anti-solvent process of perovskite film formation...
February 7, 2018: Advanced Materials
https://www.readbyqxmd.com/read/29403053/quantitative-relations-between-interaction-parameter-miscibility-and-function-in-organic-solar-cells
#20
Long Ye, Huawei Hu, Masoud Ghasemi, Tonghui Wang, Brian A Collins, Joo-Hyun Kim, Kui Jiang, Joshua H Carpenter, Hong Li, Zhengke Li, Terry McAfee, Jingbo Zhao, Xiankai Chen, Joshua Lin Yuk Lai, Tingxuan Ma, Jean-Luc Bredas, He Yan, Harald Ade
Although it is known that molecular interactions govern morphology formation and purity of mixed domains of conjugated polymer donors and small-molecule acceptors, and thus largely control the achievable performance of organic solar cells, quantifying interaction-function relations has remained elusive. Here, we first determine the temperature-dependent effective amorphous-amorphous interaction parameter, χaa(T), by mapping out the phase diagram of a model amorphous polymer:fullerene material system. We then establish a quantitative 'constant-kink-saturation' relation between χaa and the fill factor in organic solar cells that is verified in detail in a model system and delineated across numerous high- and low-performing materials systems, including fullerene and non-fullerene acceptors...
February 5, 2018: Nature Materials
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