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RISS 인기검색어
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- 저자 : Jong H. Kim(김종현) (검색결과 7 건)
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실내 저조도용 고출력 페로브스카이트 태양 전지 소자 설계 및 구동 원리
김종현(Jong. H. Kim),신소정(So jeong Shin) 한국진공학회 2020 진공 이야기 Vol.6 No.4
In this work, we report on the design principles of high-power perovskite solar cells (PSCs) for low-intensity indoor light applications, with a particular focus on the electron transport layers (ETLs). It was found that the mechanism of power generation of PSCs under low-intensity LED and halogen lights is surprisingly different compared to the 1 Sun standard test condition (STC). Based on the systemic characterization of the ideality factor, charge recombination, trap density, and charge-separation, it was revealed that interfacial charge traps or defects at the electron transport layer/ perovskite have a critical impact on the resulting power density of PSC under weak light conditions. Thus, using the suggested principle, we succeeded in demonstrating high-performance PSCs by employing an organic ETL, yielding maximum power densities up to 12.36 (56.43), 28.03 (100.97), 63.79 (187.67), and 147.74 (376.85) μW/cm2 under 200, 400, 800, and 1600 Lux LED (halogen) illumination which are among the highest values for indoor low-intensity-light solar cells.
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Doctor Blade-Coated Polymer Solar Cells
Namchul Cho(조남철),Jong H. Kim(김종현) 한국고분자학회 2016 폴리머 Vol.40 No.5
In this work, we report polymer solar cells based on blade-coated P3HT:PC<SUB>71</SUB>BM and PBDTTT-EFT:PC<SUB>71</SUB>BM bulk heterojunction photoactive layers. Enhanced power conversion efficiency of 2.75 (conventional structure) and 3.03%(inverted structure) with improved reproducibility was obtained from blade-coated P3HT:PC<SUB>71</SUB>BM solar cells, compared to spin-coated ones. Furthermore, by demonstrating 3.10% efficiency flexible solar cells using blade-coated PBDTTT-EFT:PC<SUB>71</SUB>BM films on the plastic substrates, we suggest the potential applicability of blade coating technique to the high-throughput roll-to-roll fabrication systems.
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