폴리머 (Polymer(Korea))

  • 제37권4호
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  • Pages.470-477
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  • 2013
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  • 0379-153X(pISSN)
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  • 2234-8077(eISSN)
한국고분자학회 (The Polymer Society of Korea)
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DOI QR코드

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다중벽 탄소 나노튜브 기반 고충전 나노복합 페이스트를 이용한 염료 감응 태양 전지용 상대 전극의 제조에 있어서 분산 제어의 효과

Effect of Dispersion Control of Multi-walled Carbon Nanotube in High Filler Content Nano-composite Paste for the Fabrication of Counter Electrode in Dye-sensitized Solar Cell

  • 박소현 (세종대학교 공과대학 나노신소재공학과 및 고분자 연구소) ;
  • 홍성철 (세종대학교 공과대학 나노신소재공학과 및 고분자 연구소)
  • Park, So Hyun (Faculty of Nanotechnology and Advanced Materials Engineering, Sejong Polymer Research Center, Sejong University) ;
  • Hong, Sung Chul (Faculty of Nanotechnology and Advanced Materials Engineering, Sejong Polymer Research Center, Sejong University)
  • 투고 : 2013.01.30
  • 심사 : 2013.03.10
  • 발행 : 2013.07.25
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초록

가공이 쉬우면서도 성능이 우수한 염료 감응 태양 전지(DSSC)용 상대 전극을 제조하기 위하여 다중벽 탄소 나노튜브(MWCNT) 기반의 고충전 나노복합 페이스트를 제조하고, MWCNT의 분산 제어가 미치는 영향에 대하여 조사하여 보았다. MWCNT의 분산성을 향상시키기 위하여 폴리스티렌 기반의 기능성 블록 공중합체를 리빙 라디칼 중합법으로 합성하여 MWCNT의 표면 개질제로 사용하였으며, 적절한 용매 조건의 선택을 통하여 고충전 나노복합 페이스트의 가공성이 향상되는 것을 확인할 수 있었다. MWCNT의 분산 제어를 통해 이를 상대 전극으로 도입한 DSSC의 광전 변환 효율이 향상됨을 확인할 수 있었으며, 이는 볼밀법을 이용한 MWCNT의 물리적 분산을 통해서도 검증할 수 있었다. 미량의 platinum(Pt) 나노입자와 복합화시킬 경우, 표준 Pt 상대 전극보다도 더 우수한 성능을 가지는 MWCNT 기반 상대 전극을 제조할 수 있음을 확인하였다.

Multi-walled carbon nanotube (MWCNT) based nano-composite pastes having a high filler content are prepared for the facile fabrication of a counter electrode (CE) of dye-sensitized solar cell (DSSC). A polystyrene-based functional block copolymer is prepared through a controlled "living" radical polymerization technique, affording a surface modifier for the dispersion control of MWCNT in the paste. Physical dispersion through a ball-milling method additionally confirms the importance of the dispersion control, providing DSSC with enhanced processibility and improved solar-to-electricity energy conversion efficiency (${\eta}$) values. The performances of the DSSCs are further improved through the incorporation of minor amount of platinum (Pt) nanoparticles into the MWCNT pastes. The DSSC with the Pt/MWCNT hybrid CE exhibits very high ${\eta}$ values, which is superior to that of DSSC with the standard Pt CE.

키워드

과제정보

연구 과제 주관 기관 : 한국연구재단

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