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Justifying benzoselenadiazole acceptor core as organic semiconductor for stable bulk-heterojunction organic solar cells at ambient temperature

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Journal of materiomics 2021年第5期7卷 1112-1121页

作者： Abdullah m.shaheer akhtar Eun-Bi Kim Hyung-Shik Shin Sadia Ameen Advanced materials and Devices Laboratory Department of Bio-Convergence ScienceJeongeup CampusJeonbuk National University56212Republic of Korea New&Renewable Energy material Development Center(NewREC) Jeonbuk National UniversityRepublic of Korea Energy materials&Surface Science Laboratory Solar Energy Research CenterSchool of Chemical EngineeringJeonbuk National University54896Republic of Korea Korea Basic Science Institute(KBSI) 169-148 Gwahak-roYuseong-guDaejon34133Republic of Korea

This work describes the utilization of D-A-D type organic semiconductor,4,4’-(benzo[c][1,2,5]selenadiazole-4,7-diyl)bis(N,N-diphenylaniline),denoted as Se-2TPA,containing benzoselenadiazole(BSe)as acceptor core and end-capped with triphenylamine(TPA)donor units as donor materials in solar ***,the attachment of TPA donor moiety in BSe acceptor unit enlarged the conjugated system by extending the p-bonding which effectively tuned the optical and electrochemical properties of *** bulk heterojunction organic solar cell(BHJ-OSCs)with configuration of ITO/cp-TiO_(2)/Se-2TPA:PC61Bm/Au showed power conversion efficiency(PCE)of~4.12% with short circuit current(Jsc)value of~11.28 mA/cm^(2),open circuit voltage(Voc)of~0.775 V and fill factor(FF)of~*** significantly increased from~4.12% to~5.29% when 1,8-diiodooctane(DIO)was added as an additive in Se-2TPA:PC61Bm blend which associated with less phase separation and improved the charge *** fabricated BHJ-OSCs processed with 3%DIO,ITO/cp-TiO_(2)/Se-2TPA:PC61Bm/Au configuration displayed a long-term stability under air condition at an ambient temperature by maintaining~80% PCE for the duration of 30 *** advantages of easy synthesis,low cost and promising cell performance supported Se-2TPA as successful organic semiconductor for BHJ-OSCs.

关键词： Benzoselenadiazole Thin film Organic semiconductor Stability Organic solar cells

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Assessment of biogas generation potential from slaughterhouse wastes in Dhaka city,Bangladesh

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Waste Disposal and Sustainable Energy 2021年第1期3卷 41-48页

作者： Sayedus Salehin Syed shaheer Uddin Ahmed md.Ehasanul Hoque md.Salauddin mrigdad S.m.Ashef Hussain S.m.Tahsin Intisar Department of mechanical and Production Engineering Islamic University of TechnologyBoard BazarGazipur 1704Bangladesh School of mechanical and Aerospace Engineering Nanyang Technological University50 Nanyang AvenueSingapore 639798Singapore Tampere University of Technology Korkeakoulunkatu 7 Kampusareena33720 TampereFinland Department of Electrical and Electronic Engineering American International University BangladeshBananiDhaka 1213Bangladesh

Slaughterhouse waste is a highly energy-rich waste and is an attractive material to treat through anaerobic digestion to produce *** could be burned to provide heating and electricity or can be converted to bio-methane to be used as *** can also aid in waste management and evidently reduce the ecological and environmental *** this paper,the potential of biogas generation from the slaughterhouses in Dhaka is *** in 21 regions in Dhaka city have been surveyed for data collection and *** study estimates that approximately 7915 tons of slaughterhouse waste are generated annually from the slaughterhouses in Dhaka city which has the potential to generate 2.15 mm^(3) of biogas.A case study on the biggest government registered slaughterhouse is also demonstrated regarding generating electricity.

关键词： Biogas Slaughterhouse waste Electricity Clean energy Energy recovery

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