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Synthesis and characterization of copolymer based on bdp unit for inverted oraganic photovoltaics
남승준,이태호,전성재,이의진,문두경 한국공업화학회 2016 한국공업화학회 연구논문 초록집 Vol.2016 No.0
Bulk-heterojunction(BHJ) type Organic photovoltaics(OPVs) have attracted tremendous attention due to their unique advantages including low cost, light weight, and potential uses in flexible and large-area devices. However degradation in air for conventional BHJ-OPVs is serious problem. To improve this point, Inverted OPVs(IOPVs) are introduced to improve low stability about air. In IOPVs have a structure in which the metal acts as the anode and the transparent electrode acts as the cathode. The Benzo[2,1-b:3,4;b`]dithiophene (BDP) unit decreases electron richness of the flanked bithiophene unit, which provides a low-lying highest occupied molecular orbital (HOMO) energy level. To extend π-conjugation length, we also introduced oxadiazole acceptor unit and bithiophene spacer. In this study, we synthesized polymers using Stille coupling reaction. The synthesized polymer is characterized by (1)H-NMR, GPC, TGA, UV, CV and fabricated device was measured.
Synthesis of extended Phenazine derivatives for Organic Photovoltaics
남승준,전성재,한용운,문두경 한국공업화학회 2016 한국공업화학회 연구논문 초록집 Vol.2016 No.1
OPVs have unique advantages including lower cost, lightweight, and flexibility. The polymer donor material is general structure that has electron deficient unit and electron rich unit. This polymer is applied to Bulk heterojunction (BHJ) type OPVs with fullerene-based acceptor materials. Among electron-rich units of D-A copolymer, phenazine (Phz) units is well known for planer back bone, strong electron-withdrawing properties. To extend conjugation of Phz, we introduced a fused ring at the top of Phz units and spacer between donor and acceptor. Finally, it can have expanded π-π conjugation length and improve planarity of copolymer backbone. This characteristic is enable to harvest more photon in the long-wavelength region. In this study, we introduced Phz derivatives as acceptor units and BDP derivatives as donor unit in copolymers by stille coupling reaction. The synthesized polymer is characterized by Proton-NMR, GPC, TGA, UV-vis spectrometer, CV, fabricated device were measured.
Synthesis and characterization of copolymer based on BDP unit for oraganic photovoltaics
남승준,최민희,전성재,한용운,문두경 한국공업화학회 2015 한국공업화학회 연구논문 초록집 Vol.2015 No.0
Bulk-heterojunction(BHJ) type Organic photovoltaics(OPVs) have attracted tremendous attention due to their unique advantages including low cost, light weight, and potential uses in flexible and large-area devices. The Benzo[2,1-b:3,4,b``]dithiophene (BDP) unit decreases electron richness of the flanked bithiophene unit, which provides a lowlying highest occupied molecular orbital (HOMO) energy level. The extended π-conjugation length also helps to form highly ordered films that facilitate charge carrier transport. The low-lying HOMO level and the large hole mobilities make BDP-containing polymers particularly attractive for OPVs. Recently research about adjusting length of spacer of the polymer is effective methods for improving Jsc and PCE. In this study, we synthesized polymers using Stille coupling reaction. The synthesized polymer is characterized by 1H-NMR, GPC, TGA, UV, CV and fabricated device was measured.
Synthesis and characterization of copolymer based on BDP-Phz for oraganic photovoltaics
남승준,이태호,전성재,이의진,문두경 한국공업화학회 2014 한국공업화학회 연구논문 초록집 Vol.2014 No.1
Bulk-heterojunction(BHJ) organic photovoltaics (OPVs) have attracted tremendous attention due to their unique advantages including low cost, light weight, and potential uses in flexible and large-area devices. The Benzo[2,1-b:3,4;b']dithiophene (BDP) decreases electron richness of the flanked bithiophene unit, which provides a low-lying highest occupied molecular orbital (HOMO) energy level. The extended π-conjugation length also helps to form highly ordered films that facilitate charge carrier transport. The low-lying HOMO level and the large hole mobilities make BDP-containing polymers particularly attractive for OPVs. The phenazine(Phz) was selected as acceptor unit within the polymer backbone to decrease the band gap of the polymer and to tune the energy levels. In this study, we synthesized polymers PBDP-DTPhz using Stille coupling reaction. The synthesized polymer is characterized by <sup>1</sup>H-NMR, GPC, TGA, UV, CV and fabricated device was measured.
남승준,전성재,한용운,문두경 한국공업화학회 2018 Journal of Industrial and Engineering Chemistry Vol.63 No.-
The conjugated structures of donor–acceptor (D–A) type with sulfur (S), nitrogen (N) and oxygen (O) atoms aid to close packing each other in the backbone by non-covalent interactions. Furthermore, non-covalent interactions are exerted three dimensionally and affect various properties. To know this effects, we introduced different S, N and O contents as benzothiadiazole (BT) and dithienophenazine (DTPz, up or down direction of S) units on each polymer backbone. Among the three polymers, P2 with up direction of S showed an open-circuit voltage (Voc) of 0.90 V, fill factor (FF) of 54.7% and reached best power conversion efficiency (PCE) of 4.8%.
Synthesis and characterization of copolymer based on BDT-Qx for inverted oraganic photovoltaics
남승준,이태호,전성재,이의진,문두경 한국공업화학회 2015 한국공업화학회 연구논문 초록집 Vol.2015 No.1
Bulk-heterojunction(BHJ) Organic photovoltaics(OPVs) have attracted tremendous attention due to their unique advantages including low cost, light weight, and potential uses in flexible and large-area devices. However degradation in air for conventional BHJ-OPVs is serious problem. To improve this point, Inverted OPVs(IOPVs) are introduced to improve low stability about air. In IOPVs have a structure in which the metal acts as the anode and the transparent electrode acts as the cathode. The Benzo[1,2-b:4,5;b']dithiophene (BDT) and Quinoxaline(Qx) based unit respectively selected as donor, acceptor unit within the polymer backbone to decrease the band gap of the polymer and to tune the energy levels. In this study, we synthesized polymers using Stille coupling reaction. The synthesized polymer is characterized by <sup>1</sup>H-NMR, GPC, TGA, UV, CV and fabricated device was measured.
Study of copolymer based on BDP unit for oraganic photovoltaics
남승준,이태호,전성재,한용운,문두경 한국공업화학회 2016 한국공업화학회 연구논문 초록집 Vol.2016 No.0
Polymer solar cells(PSCs) with great commercialization potential show unique advantages, such as flexible and large area solar cells through the low-cost roll-to-roll process. The Benzo[2,1-b:3,4;b`] dithiophene (BDP) is well known for donor unit which decreases electron richness of the flanked bithiophene unit. Also BDP unit provides a low-lying highest occupied molecular orbital (HOMO) energy level. The extended π-conjugation length also helps to form highly ordered films that facilitate charge carrier transport. The low-lying HOMO level and the large hole mobilities make BDP-containing polymers particularly attractive for OPVs. Recently researchs have conducted about changing acceptor uint`s atom. This strategy is effective methode for changing properties of polymer. In this study, we synthesized polymers using Stille coupling reaction. The synthesized polymer is characterized by (1)H-NMR, GPC, TGA, UV, CV and fabricated device was measured.
생활체육축구 동호인의 운동스트레스가 운동몰입 및 운동지속에 미치는 영향
남승준(Nam, SeungJun),오세이(Oh, Sei-Yi) 한국여가레크리에이션학회 2020 한국여가레크리에이션학회지 Vol.44 No.2
In this study, a total of 360 questionnaires were distributed to find out the relationship between stress and exercises flow and exercise adherence of soccer club members, and a total of 331 (91.94%) were used in the analysis of this study, except for 29 questionnaires that were judged to be unavailable for analysis. Valid samples were analyzed using the IBM SPSS Statistics 21 and the IBM AMOS 21 programs, and the details of the analysis were as follows. First, for the validation of the validity and reliability of this study’s tools, the confirmatory factor analysis and Cronbach’s a were calculated, and the condensate validity and discriminant validity were verified. Second, a correlation analysis was conducted to verify the relationship of potential factors. Third, path analysis using structural equation modelling was performed to verify the relationship between exercise stress, exercise flow, and exercise adherence of the homophobic people set up in this study. As a result of the hypothesis, firstly, the relationship between exercises stress and flow in soccer club members among leisure participants was not adopted. Second, the relationship between exercises stress and exercises adherence of soccer club members among leisure participants was found to have a significant effect. Third, it was found that the relationship between exercises flow and exercises adherence of soccer club members among leisure participants had a significant impact.
최민희,남승준,이의진,문두경 한국공업화학회 2016 한국공업화학회 연구논문 초록집 Vol.2016 No.1
To improve the power conversion efficiencies(PCEs) of PSCs, the control of an active layer/electrode interface to form an Ohmic contact is one of the pivotal factors. Conjugated water/alcohol soluble polymers that consist of a conjugated main chain and a polar/ionic side chain have received growing attention because of their outstanding intrinsic optoelectronic properties, good stability and unique solubility. In this work, we present the synthesis and characterization of new conjugated polyelectrolytes(CPEs) containing aromatic five-membered heterocyclic compounds. Replacement of the sulfur atom of thiophene by the oxygen and selenium atoms is expected to alter the electronic structure of the corresponding polymers. We study the effects of the electronic properties at the interface between the anode and the active layer. An increase in a dipole moment leads to decrease the work function of ITO electrodes and the surface potential between the active layer and HTL effectively.