Jin Hyuck Heo
고려대학교 공과대학 기계공학부 · 공학
이 교수의 연구실은 페로브스카이트 기반 태양전지와 X선 검출기 등 에너지 변환 및 감지 소자에 중점을 두고 있으며, 특히 스플린코ating 및 용매 조절을 통한 박막 제어 기술로 높은 효율과 안정성을 확보하는 데 성공했습니다. 다양한 페로브스카이트 재료(일반형, 혼합할라이드, 납 할라이드 나노결정 등)를 활용해 태양전지의 전환 효율 향상과 X선 검출 성능 향상을 동시에 추구하고 있습니다. 또한, 상용화 가능하고 비용 효율적인 솔루션 프로세싱 기반의 소자 설계가 핵심 연구 방향입니다.
표시된 성과는 수집된 데이터 기준으로 산출되며, 일부 차이가 있을 수 있습니다.
The inverted CH<sub>3</sub>NH<sub>3</sub>PbI<sub>3</sub> planar hybrid solar cells exhibited better device efficiency and stability and lower hysteresis than the normal cells.
Readily commercializable and cost-effective next-generation CsPbBr<sub>3</sub> perovskite nanocrystals (PNCs) based X-ray detectors are demonstrated. The PNCs-based X-ray detector exhibits higher spatial resolution (9.8 lp mm<sup>-1</sup> at modulation transfer function (MTF) = 0.2 and 12.5-8.9 lp mm<sup>-1</sup> for a linear line chart), faster response time (≈200 ns), and comparable stability (>40 Gy<sub>air</sub> s<sup>-1</sup> of X-ray exposure) compared with the commercialized terbium-doped
A power conversion efficiency of 10.4% is demonstrated in planar CH3 NH3 PbBr3 hybrid solar cells without hysteresis of the J-V curve, by way of controlled crystallization in the spin-coating process. The high efficiency is attributed to the formation of a dense CH3 NH3 PbBr3 thin film by the introduction of HBr solution because the HBr increases the solubility of the CH3 NH3 PbBr3 and forms a thinner CH3 NH3 PbBr3 layer with full surface coverage.
Planar CH3NH3PbI3 perovskite solar cells with constant 17.2% average power conversion efficiency irrespective of the scan rate are described. These properties are attributed to the formation of a pure CH3 NH3 PbI3 thin film by the introduction of a HI solution. Thereby, charge-injection/separation efficiency, charge-collection efficiency, diffusion coefficient, carrier lifetime, and traps are improved. As a service to our authors and readers, this journal provides supporting information supplied
We fabricated highly efficient planar type CH<sub>3</sub>NH<sub>3</sub>PbI<sub>3−x</sub>Cl<sub>x</sub> (MAPbI<sub>3−x</sub>Cl<sub>x</sub>) mixed halide perovskite solar cells <italic>via</italic> spray coating with a controlled composition of the solvents.
Perovskite–perovskite tandem solar cells with open-circuit voltages of over 2.2 V are reported. These cost-effective, solution-processible perovskite hybrid tandem solar cells with high open-circuit voltages are fabricated by the simple lamination of a front planar MAPbBr3 perovskite cell and a back MAPbI3 planar perovskite solar cell. As a service to our authors and readers, this journal provides supporting information supplied by the authors. Such materials are peer reviewed and may be re-orga
A highly efficient PEN/ITO/ZnO/CH<sub>3</sub>NH<sub>3</sub>PbI<sub>3</sub> perovskite/PTAA/Au flexible planar solar cell with 1.1 V <italic>V</italic><sub>oc</sub>, 18.7 mA cm<sup>−2</sup><italic>J</italic><sub>sc</sub>, 75% FF, and 15.4% <italic>η</italic> for the forward scan direction and 1.1 V <italic>V</italic><sub>oc</sub>, 18.7 mA cm<sup>−2</sup><italic>J</italic><sub>sc</sub>, 76% FF and 15.6% <italic>η</italic> for the reverse scan direction under illumination of 1 Sun was demonstrated.
Preserving the stability of Sn-based halide perovskites is a primary concern in developing photovoltaic light-absorbing materials for lead-free perovskite solar cells. Whereas the addition of SnX<sub>2</sub> (X = F, Cl, Br) has been demonstrated to improve the photovoltaic performance of Sn halide perovskite solar cells, the mechanistic roles of SnX<sub>2</sub> in the performance enhancement have not yet been studied appropriately. Here we perform a comparative study of CsSnI<sub>3</sub> films a
Semi-transparent MAPbI<sub>3</sub>planar sandwich solar cells were fabricated by simply laminating an F doped tin oxide/TiO<sub>2</sub>/MAPbI<sub>3</sub>/wet hole transporting material with additives and PEDOT:PSS/indium tin oxide (ITO).
Super flexible TCO-free FAPbI<sub>3−x</sub>Br<sub>x</sub>planar type inverted perovskite solar cells with a 17.9% power conversion efficiency under 1 sun conditions were demonstrated by introducing an APTES (3-aminopropyl triethoxysilane) adhesion promoter between a PET flexible substrate and a AuCl<sub>3</sub>-doped single-layer graphene transparent electrode.
Super-flexible bis(trifluoromethanesulfonyl)-amide (TFSA)-doped graphene transparent conducting electrode (GR TCE)-based FAPbI<sub>3 − x</sub>Br<sub>x</sub> perovskite solar cells with 18.9% power conversion efficiency (PCE) for a rigid device and 18.3% for a flexible one are demonstrated because the TFSA-doped GR TCE reveals high conductivity and high transmittance.
In this review, we discuss the current state-of-art, research gateways and future prospects of flexible (bendable) perovskite solar cells (PSCs) towards their eventual commercialization.
