http://chineseinput.net/에서 pinyin(병음)방식으로 중국어를 변환할 수 있습니다.
변환된 중국어를 복사하여 사용하시면 됩니다.
- 中文 을 입력하시려면 zhongwen을 입력하시고 space를누르시면됩니다.
- 北京 을 입력하시려면 beijing을 입력하시고 space를 누르시면 됩니다.
RISS 인기검색어
- 검색키워드
- 저자 : Mingjun Guo (검색결과 2 건)
- 무료
- 기관 내 무료
- 유료
-
Emission properties of sequentially deposited ultrathin CH3NH3PbI3/MoS2 heterostructures
Shao Ziyi,Xiao Junting,Guo Xiao,You Siwen,Zhang Yangyang,Li Mingjun,Song Fei,Zhou Conghua,Xie Haipeng,Gao Yongli,Sun Jiatao,Huang Han 한국물리학회 2022 Current Applied Physics Vol.36 No.-
Hybrid organic-inorganic perovskite materials have obtained considerable attention due to their exotic optoelectronic properties and extraordinarily high performance in photovoltaic devices. Herein, we successively converted the ultrathin PbI2/MoS2 into the CH3NH3PbI3/MoS2 heterostructures via CH3NH3I vapor processing. Atomic force microscopy (AFM)、Scanning electron microscopy (SEM) and X-ray photoemission spectroscopy (XPS) measurements prove the high-quality of the converted CH3NH3PbI3/MoS2. Both MoS2 and CH3NH3PbI3 related photoluminescence (PL) intensity quenching in CH3NH3PbI3/MoS2 implies a Type-II energy level alignment at the interface. Temperature-dependent PL measurements show that the emission peak position shifting trend of CH3NH3PbI3 is opposite to that of MoS2 (traditional semiconductors) due to the thermal expansion and electron-phonon coupling effects. The CH3NH3PbI3/TMDC heterostructures are useful in fabricating innovative devices for wider optoelectronic applications.
-
Study on accelerated life tests for main shaft bearings in wind turbines
Sheng Jin,Hanjie Dong,Jie Chen,Xinghui Xie,Mingjun Guo 대한기계학회 2022 JOURNAL OF MECHANICAL SCIENCE AND TECHNOLOGY Vol.36 No.3
This paper focused on a 2.1 MW wind turbine main shaft bearing as the research object and analyzed its reliability under actual working conditions for three years. An accelerated life test for the main shaft bearing in a wind turbine with an amplified load was carried out depending on the reference value of the radial dynamic load rating. The test was conducted for 140 days. The bearing did not show any noticeable damage at the end of the test, which shows that the bearing could be reliable for three years. To prove the correctness of the ALT, a finite element model of the main shaft bearing was created in ABAQUS to obtain the contact stress in both the actual working conditions and the accelerated test conditions. The calculation results were transferred to FE-SAFE to calculate the fatigue life. Finally, a comparison between the theoretical and simulation acceleration factors validated the rationality of the experimental design.
연관 검색어 추천
이 검색어로 많이 본 자료
활용도 높은 자료
