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Effects of Different Chalcogen Atom Substitution in Electron Rich Unit of Isoindigo-based Conjugated Copolymer on Photovoltaic Properties
| DC Field | Value | Language |
|---|---|---|
| dc.contributor.advisor | 조원호 | - |
| dc.contributor.author | 유태웅 | - |
| dc.date.accessioned | 2017-07-14T03:06:28Z | - |
| dc.date.available | 2017-07-14T03:06:28Z | - |
| dc.date.issued | 2014-02 | - |
| dc.identifier.other | 000000016620 | - |
| dc.identifier.uri | https://hdl.handle.net/10371/123273 | - |
| dc.description | 학위논문 (석사)-- 서울대학교 대학원 : 재료공학부, 2014. 2. 조원호. | - |
| dc.description.abstract | Recently, chalcogen atom substitution on a conjugated copolymer is investigated to enhance the photovoltaic properties. In this study, new low bandgap conjugated copolymers based on isoindigo and chalcogenophenes (thiophene, selenophene and tellurophene) were synthesized (PIT, PISe and PITe, respectively) to investigate the effects of the chalcogen atom on the photovoltaic properties. The copolymers PISe and PITe show both bathochromic shift and lowering the lowest unoccupied molecular orbital energy level as compared to its thiophene analogue. The solar cell device based on PISe blended with PC61BM exhibits enhanced power conversion efficiency (PCE) of 4.36% with a JSC of 9.38 mA cm2 which is higher than that of PIT. However, PITe shows lower JSC than that of PIT and PISe because of its coarse morphology of the blend. | - |
| dc.description.tableofcontents | Abstract ⅰ
List of Schemes ⅳ List of Figures ⅴ List of Tables ⅶ 1. Introduction 1 2 .Experimental Section 5 2.1. Materials 5 2.2. Synthesis of monomers 5 2.3. Synthesis of polymers 14 2.4. Characterization 18 2.5. Device fabrication and measurements 19 3. Results and Discussion 22 3.1. Synthesis and characterization 22 3.2. Optoelectrical properties 23 3.3. Structrural properteis 32 3.4. Photovoltaic properties 34 3.5. Charge transport characteristics 38 3.6. Morphology investigation 43 4. Conclusions 45 Bibliography 46 Korean Abstract 50 | - |
| dc.format | application/pdf | - |
| dc.format.extent | 1933818 bytes | - |
| dc.format.medium | application/pdf | - |
| dc.language.iso | en | - |
| dc.publisher | 서울대학교 대학원 | - |
| dc.subject.ddc | 620 | - |
| dc.title | Effects of Different Chalcogen Atom Substitution in Electron Rich Unit of Isoindigo-based Conjugated Copolymer on Photovoltaic Properties | - |
| dc.type | Thesis | - |
| dc.contributor.AlternativeAuthor | Yoo Tae Woong | - |
| dc.description.degree | Master | - |
| dc.citation.pages | ⅶ, 50 | - |
| dc.contributor.affiliation | 공과대학 재료공학부 | - |
| dc.date.awarded | 2014-02 | - |
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