https://scholar.dgist.ac.kr/handle/20.500.11750/207 2026-07-21T11:41:49Z https://scholar.dgist.ac.kr/handle/20.500.11750/60454 Title: High-Gain Ag2Te/MoS2 Hybrid Photodetectors for Short-Wave Infrared Imaging Author(s): Jeong, Seock-Jin; Ko, Hyun Woo; Jo, Suyeon; Selvaraj, Joicy; Kim, Jung-Min; Lee, Namji; Ahn, Jae-Hyeon; Lee, Hyeonchae; Jeong, Seungmin; Kim, Heedae; Seo, Paul Hongsuck; Shim, Jae Won; Kim, Yonghun; Ra, Hyun-Soo; Park, Min-Chul; Lee, Jong-Soo Abstract: Physical artificial intelligence has emerged as a pivotal component in next-generation humanoid technologies, including advanced optical sensors, as it enables autonomous acquisition of sensory information. This study reports a high-performance 0D/2D hybrid photodetector using a high-gain Ag2Te/MoS2 hybrid structure for visible to short-wave infrared (SWIR) photodetection, achieved by the absorption of Ag2Te quantum dots in the infrared region (similar to 1450 nm). The Ag2Te/MoS2 photodetector exhibits a high photoresponsivity of around 7.5 & times; 105 AW-1 and a specific detectivity of over 9.9 & times; 108 Jones at 1 & micro;W/cm2 illumination power with a 0.2 V drain bias voltage. Furthermore, depending on the gain of the photodetector, a fast response speed can also be achieved, with rise and decay times as short as 13 and 23 ms. The 0D/2D hybrid devices were successfully implemented in a 32 & times; 32 array format for infrared imaging, with the results demonstrating spatially resolved pattern reconstruction and real-time photoresponse acquisition. By hybridizing quantum dots and 2D materials, the developed photodetector has broad potential applications, including use in highly integrated SWIR image sensors. 2026-03-31T15:00:00Z https://scholar.dgist.ac.kr/handle/20.500.11750/60453 Title: Electrically Tunable Tunneling and Spectral Response in WSe2/h-BN/CdSe/Graphene Heterostructure Author(s): Lee, Sang-Hyeon; Teku, Justice Agbeshie; Jeong, Min-Hye; Ahn, Jae-Hyeon; Chae, Weon-Sik; Kwak, Do-Hyun; Lee, Jong-Soo Abstract: Mixed-dimensional heterostructures consisting of zero- and two-dimensional materials offer a promising platform for optoelectronic devices, as the versatility of material combination allows tunable optical properties. Bias-induced approaches provide an additional means to tune the optical properties beyond the intrinsic band alignment of van der Waals junctions. Here, bias-induced tunneling characteristics are achieved in vertically stacked WSe2/h-BN/CdSe quantum dots/graphene heterostructures by employing the top graphene electrode to regulate carrier transport across the h-BN barrier. The electrical analyses based on the Simmons approximation demonstrate tunneling-mediated charge transfer through thin h-BN layers and bias-dependent modulation of the barrier height. Furthermore, tunneling-induced exciton dissociation in WSe2 and CdSe QDs is observed through spectral responsivity and scanning photocurrent measurements. This work establishes a voltage-dependent tunneling platform that enables deterministic control of carrier dynamics in mixed-dimensional optoelectronic devices. 2026-05-31T15:00:00Z https://scholar.dgist.ac.kr/handle/20.500.11750/60445 Title: 신축성 양자점 복합체 및 이의 제조 방법, 이를 포함하는 컬러 필터 Author(s): 양지웅; 송현화 Abstract: 본 발명은 신축성 양자점 복합체 및 이의 제조 방법, 이를 포함하는 컬러 필터를 개시한다. 본 발명은 리간드가 표면에 결합된 양자점; 및 상기 리간드와 가교 결합을 형성하는 탄성 중합체;를 포함하고, 상기 리간드는 말단에 탄소 이중 결합을 포함하는 것을 특징으로 한다. https://scholar.dgist.ac.kr/handle/20.500.11750/60441 Title: 원자력 발전소 방재 방법 및 이를 수행하는 시스템 Author(s): 이준호; 인수일; 김태규; 이상훈; 이규정; 손병락 Abstract: 본 발명은 방사능을 측정할 수 있는 방사능 측정 장치를 장착한 드론을 활용하여 원자력 발전소 내부 또는 부지나, 주변부에 대한 국지적 실시간 방사능 수치 정보를 수집하고, 함께 작동하는 풍향풍속계를 통해 현장의 기상 정보를 통합하여 방사능 확산 지도와 대피로를 산출하여, 통신망을 통해 대피로를 안내하기 위한 원자력 발전소 방재 방법 및 이를 수행하는 시스템에 대한 것으로, 원전 재난시 최적의 드론 및 드론 스테이션을 구동할 수 있으며, 다양한 상황별 프로그램을 구상하여 적합한 정보를 확인 및 명령함으로써 시스템을 올바르게 작동하고자 하고, 시뮬레이션을 통해 대피로를 최적화하여 원전재난 대피 시스템을 검증하고, 나아가 빅데이터 생성 및 활용을 수행할 수 있다.