Hak‐Beom Kim

Refining Multiscale Heterogeneity in Perovskite Solar Cells via Interfacial Chemistry Homogenization

Hochan Song, Ji-eun Won, Hak‐Beom Kim, Eunseo Lee et autres

Abstract Controlling multiscale structural heterogeneities in halide perovskites (HPs) is a key bottleneck to achieving the reproducible high‐performances and longevity of perovskite solar cells (PSCs). A correlative understanding of structural and chemical features at the HP/charge transport layer interface is vital to …

kr (code pays fourni par la source)

The Effect of Training Autonomy on Athlete Self-Management Behavior of Female Golfers in High School

Hyeok-Ju Kwon, Hyunbin Kim, Hak‐Beom Kim

본 연구는 훈련 자율성이 운동선수 자기관리행동에 미치는 영향을 알아보고자 하였다. 고등학교 여자 골프선수 6명을 대상으로 8주 동안 진행되었으며, 사전/사후 효과를 알아보기 위하여 운동선수 자기관리행동 검사지를 사용하였 다. 측정은 사전, 사후 총 2회에 걸쳐 이루어졌다. 또한 연구참여자 및 지도자와 인터뷰를 실시하여 양적 연구 …

Post‐Treated Polycrystalline SnO 2 in Perovskite Solar Cells for High Efficiency and Quasi‐Steady‐State‐IV Stability

Ji Won Song, Yun Seop Shin, Minjin Kim, Jaehwi Lee et autres

Abstract The prominent chemical bath deposition (CBD) method leverages tin dioxide (SnO 2 ) as an electron transport layer (ETL) in perovskite solar cells (PSCs), achieving exceptional efficiency. The deposition of SnO 2 , however, can lead to the formation of oxygen …

kr (code pays fourni par la source)

Apply a Cue Card for the Improvement of Performance Strategies and Performance of Korean Ladies Professional Golfers : A Case Study

Hyeok-Ju Kwon, Hyunbin Kim, Hak‐Beom Kim

본 연구는 심리기술훈련의 효과를 검증하기 위하여 과정단서카드를 활용하였다. 한국여자 프로골프선수 7명을 대상으로 24주동안 심리기술훈련이 진행되었으며, 그 효과를 알아보기 위해 스포츠수행전략(TOPS) 검사를 사용하였 다. 측정은 사전, 사후단계로 총 2회에 걸쳐 이루어졌다. 또한 측정 전 3개 대회와 측정 후 3개 대회의 평균 스코어를 비교분 …

Perovskite solar cells approaching 25% PCE using side chain terminated hole transport materials with low concentration in a non-halogenated solvent process

Zhiqing Xie, Yeongju Do, Seung Ju Choi, Ho‐Yeol Park et autres

Three new hole transport materials were designed using an end-group strategy for perovskite solar cells to achieve remarkable efficiency approaching 25% at a low concentration in an environmentally friendly solvent.

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High-Performance and Selective Semi-Transparent Perovskite Solar Cells Using 3d-Structured Fto

Sucheol Ju, Seung Ju Choi, Hansang Sung, Minjin Kim et autres

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Thienothiophene‐Assisted Property Optimization for Dopant‐Free π‐Conjugation Polymeric Hole Transport Material Achieving Over 23% Efficiency in Perovskite Solar Cells

Zhiqing Xie, Hyung‐Jin Park, SeungJu Choi, Ho‐Yeol Park et autres

Abstract Hole transport materials (HTMs) play essential roles in achieving high photovoltaic performance and long‐term stability in the n–i–p structure of perovskite solar cell (PSC) devices. Recently, dopant‐free polymeric materials as HTMs in PSCs have attracted considerable attention owing to high carrier …

kr, us (code pays fourni par la source)

Ion-modulated radical doping of spiro-OMeTAD for more efficient and stable perovskite solar cells

Tiankai Zhang, Feng Wang, Hak‐Beom Kim, In Woo Choi et autres

Record power conversion efficiencies (PCEs) of perovskite solar cells (PSCs) have been obtained with the organic hole transporter 2,2′,7,7′-tetrakis( N , N -di- p -methoxyphenyl-amine)9,9′-spirobifluorene (spiro-OMeTAD). Conventional doping of spiro-OMeTAD with hygroscopic lithium salts and volatile 4- tert -butylpyridine is a time-consuming …

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Large-area perovskite solar cells employing spiro-Naph hole transport material

Mingyu Jeong, In Woo Choi, Kanghoon Yim, Seonghun Jeong et autres

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High-Performance and Selective Semi-Transparent Perovskite Solar Cells Using 3S-Structured FTO

Sucheol Ju, Seung Ju Choi, Minjin Kim, Ji Won Song et autres

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Effects of Psychological Training Using Positive Self-Review Skills on Badminton Players' Psychological Conditions

Hak‐Beom Kim, Hyun-Bin Kim

본 연구는 심리기술훈련 중 긍정적 셀프 리뷰 기법을 통한 자기효능감에 미치는 효과를 알아보기 위하여 대학교 배드민턴 선수들을 대상으로 실시하였다. 연구 참여자는 총 5명이었으며, 주 1회 총 4회에 걸쳐 진행하였다. 연구에 사용 된 검사지는 배드민턴 자기효능감 검사지를 사용하였다. 검사지는 사전, 사후 총 2회에 …

The introduction of a perovskite seed layer for high performance perovskite solar cells

Jaeki Jeong, Hak‐Beom Kim, Yung Jin Yoon, Na An et autres

A compact seed perovskite layer (CSPL) with a p–i–n planar heterojunction structure for perovskite solar cells achieved a 19.24% power conversion efficiency with a record open circuit voltage of 1.16 V and 20.37% PCE was achieved with a CSPL assisted n–i–p structure …

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