[논문]유기태양전지의 전자 받개 물질들

공재민; 남상용

doi:10.14478/ace.2021.1110

[국내논문] 유기태양전지의 전자 받개 물질들
Electron Acceptors in Organic Solar Cells 원문보기

공업화학 = Applied chemistry for engineering, v.33 no.2, 2022년, pp.119 - 125

공재민 (경상국립대학교 그린에너지융합연구소) , 남상용 (경상국립대학교 그린에너지융합연구소)

초록
AI-Helper

최근 유기태양전지의 효율이 18%를 넘어섰다. 이러한 급속한 효율의 증가는 전자 주개 고분자와 짝을 이루는 전자 받개 물질의 개발과 깊은 연관성을 가지고 있다. 이 미니 리뷰에서는 전자 받개 물질의 개발 과정을 통해 유기태양전지의 발전 양상을 살펴본다. 본 리뷰의 첫 번째 파트에서는 유기태양전지 발전의 전반부를 이끌었던 풀러렌 기반 전자 받개 물질에 대해 살펴본다. 그리고 두 번째 파트에서는 풀러렌 기반 전자 받개 물질의 단점들을 극복할 잠재력을 가지고 있으며, 유기태양전지에 새로운 전기를 가져다 준 비(非)플러렌 기반 전자 받개 물질에 대해서 소개한다. 마지막 파트에서는 리뷰의 전체적인 요약과 더불어 20% 효율을 넘어설 전략에 대해 간단히 논의하며 본 리뷰를 마무리한다.

Abstract ▼ AI-Helper

The power conversion efficiency of organic solar cells has reached over 18%. The rapid increase in the efficiency is largely associated with the development of electron acceptors paired with proper electron donor polymers. In this mini review, the progress of organic solar cells is reviewed in terms of the development of electron acceptors. In the first part of the review, fullerene-based electron acceptors that have led the first half of organic solar cell development were dealt with. In the second part of it, nonfullerene-based electron acceptors, which have potentials to overcome the demerits of fullerene-based electron acceptors and opened a new era of organic solar cells, were introduced. Lastly, some suggestions to tackle the efficiency barrier of 20% are given with the summary of the review in the closing section.

Keyword

표/그림 (5)

그림 Figure 1. Progress of organic solar cells from the first study of photoconductivity of an organic pigment to the current state of the art[2].
그림 Figure 2. C60 fullerene, C70 fullerene, and their derivatives with different functional groups.
그림 Figure 3. A schematic illustration of exciton generation and separation at the interface of donor and acceptor in the bulk heterojunction of organic solar cells under illumination.
그림 Figure 4. Synthetic route to nonfullerene electron acceptor, ITIC and its chemical structure.
그림 Figure 5. (a) Device architecture and chemical structures of electron donor (PBDB-T) and electron acceptor (ITIC). (b) Energy band diagrams of a device based on PBDB-T:ITIC.

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