Synthesis of Conjugated Polymers based on 1,3-dibromo-4H-cyclopenta[c] thiophene-4,6(5H)-dione derivative and its application for Polymer Solar Cells
- Alternative Title
- 1,3-디브로모-4H-시클로펜타[c]티오펜-4,6(5H)-디온 유도체 기반의 공액 고분자 합성 및 고분자 태양전지 응용
- Abstract
- A series of polymers based on indandione derivative named TIND-HT-BDT, TIND-HT-BDTF, TIND-DHT-BDT and TIND-DHT-BDTF have been synthetized as donor materials for polymer solar cells (PSCs). The polymers have the typical donor-acceptor configuration where the TIND-HT (1,3-dibromo-5((5-hexylthiophen-2-yl)methylene)-4H-cyclopenta[c]thiophene-4,6 (5H) -dione) and TIND-DHT(1,3-dibromo-5((4,5-dihexylthiophen-2-yl)methylene)-4H-cyclopen- ta[c]thiophene-4,6(5H)-dione) are the electron acceptor units while the benzodithiophene (BDT) or fluorinated benzodithiophene (BDTF) are the donor units. Non-fullerene inverted type PSCs with a configuration of ITO/ZnO/polymer:Y6BO/MoO3/Ag devices based on the polymers as the donor and Y6BO as acceptor have been fabricated. The best PCE of 11.13% was obtained by the inverted-type PSCs based on TIND-DHT-BDTF with a with open-circuit voltage (Voc) of 0.82 V and short-circuit current density (Jsc) of 22.59 mA/cm2. This study gives an insight of novel donor materials for non-fullerene PSCs.
본 논문에서는 고분자 태양전지의 효율을 향상시키기 위해 TIND-HT-BDT, TIND-HT-BDTF, TIND-DHT-BDT 및 TIND-DHT-BDTF라는 네 가지 새로운 고분자를 설계 및 합성하였다. 여기서, TIND-HT (1,3-디브로모-5((5-헥실티오펜-2-일)메틸렌)-4H-시클로펜타[c]티오펜-4,6(5H)- 디온) 및 TIND-DHT (1,3-디브로모-5((4,5-디헥실티오펜-2-일)메틸렌)-4H-시클로펜타[c]티오펜-4,6(5H)-디온)은 acceptor로 사용하고 벤조디티오펜 (BDT) 또는 플루오르화 벤조디티오펜(BDTF)는 donor 단위입니다. ITO/ZnO/Donor polymer: Y6BO/MoO3/Ag 구조의 non-fullerene inverted-type고분자 태양전지를 제작하여 donor 물질 로서의 고분자의 성능을 평가하였다. 11.13%의 최고의 PCE는 TIND-DHT-BDTF에 기반한 반전형 PSC에 의해 0.82V의 개방 회로 전압(V_oc) 및 22.59mA/cm2의 단락 전류 밀도(Jsc)로 얻어졌습니다. 이 연구는 non-fullerene PSCs에 대한 새로운 donor 재료에 대한 통찰력을 제공합니다.
- Issued Date
- 2022
- Awarded Date
- 2022. 2
- Type
- Dissertation
- Keyword
- Polymer solar cell donor polymer
- Publisher
- 부경대학교
- Alternative Author(s)
- D'Orazio Colman Analia
- Affiliation
- Pukyong National university, Graduate school
- Department
- 대학원 화학융합공학부
- Advisor
- 김주현
- Table Of Contents
- Chapter 1 : Introduction 1
I. Motivation 1
II. Polymer Solar Cells (PSCs) 1
III. Basic principles of PSCs 3
IV. Device structure of PSCs 5
V. Photoactive materials 7
VI. Parameters of Solar Cells 10
i. Short-Circuit Current (Jsc) 10
ii. The Open Circuit Voltage (Voc) 10
iii. Fill Factor (FF) 10
iv. Power conversion efficiency (PCE) 11
Chapter 2 : Synthesis of Conjugated Polymers based on 1,3-dibromo-4H-cyclo penta[c]thiophene-4,6(5H)-dione derivative and its application for Polymer Solar Cells 13
I. Introduction 13
II. Experimental section 18
i. Materials 18
ii. Synthesis of monomers 19
1. Synthesis of 5-hexylthiophene-2-carbaldehyde (2) 19
2. Synthesis of 2-Bromo-3-hexylthiophene (4) 20
3. Synthesis of 2,3-dehexylthiophene (5) 21
4. Synthesis of 4,5-dehexylthiophene-2-carbaldehyde (6) 22
5. Synthesis of 1,3-dibromo-4H-cyclopenta[c]thiophene-4,6(5H)-dione (8) 23
6. Synthesis of 1,3-dibromo-5((5-hexylthiophen-2-yl) methylene)-4H-cyclopenta[c]thiophene-4,6(5H)-dione (9) 24
7. Synthesis of 1,3-dibromo-5((4,5-dihexylthiophen-2yl)methylene)4H cyclopenta[c]thiophene -4,6(5H)-dione (10) 25
iii. Synthesis of polymers 26
1. Polymerization of TIND-HT-BDT and TIND-HT-BDTF 26
2. Polymerization of TIND-DHT-BDT and TIND-DHT-BDTF 27
iv. Measurements 29
v. Fabrication of Devices 31
1. Fabrication of fullerene-based PSCs 31
2. Fabrication of non-fullerene PSCs 32
3. Fabrication of hole- and electron-only devices 33
vi. Analysis of photovoltaic devices 33
III. Results and Discussion 34
i. Synthesis and thermal analysis 34
ii. Optical and electrochemical properties 37
iii. Theoretical calculation 44
iv. Photovoltaic performance of fullerene devices 47
v. Photovoltaic performance of NFA devices 50
vi. Morphology studies 65
IV. Conclusion 69
- Degree
- Master
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