http://chineseinput.net/에서 pinyin(병음)방식으로 중국어를 변환할 수 있습니다.
변환된 중국어를 복사하여 사용하시면 됩니다.
p 형 반도체 층의 Mg 델타 도핑을 이용한 센서 광원 용 LED의 성능 향상
김유경 ( Yukyung Kim ),이승섭 ( Seungseop Lee ),전주호 ( Juho Jeon ),김만경 ( Mankyung Kim ),장수환 ( Soohwan Jang ) 한국센서학회 2022 센서학회지 Vol.31 No.1
The efficacy improvement of the light emitting diode (LED) was studied for the realization of small-size, low power consumption, and highly sensitive bio-sensor instrument. The performance of the LED with Mg delta-doping at the interface of AlGaN/GaN superlattice in p type cladding layer was simulated. The device with Mg delta-doping showed improved current, radiative recombination rate, electroluminescence, and light output power compared to the conventional LED structure. Under the bias condition of 5 V, the improved device exhibited 20.8% increase in the light output power. This is attributed to the increment of hole concentration from stable ionization of Mg in p type cladding layer. This result is expected to be used for the miniaturization, power saving, and sensitivity improvement of the bio-sensor system.
이미선(Miseon Lee),김만경(Mankyung Kim) 언어과학회 2014 언어과학연구 Vol.0 No.69
The present study explores how 4- to 6-year-oldKorean children comprehend four types of relative clauses which are varied by the semantic prominence of the head noun and the type of relative clause (i.e., subject relative clause vs. object relative clause). Results from a picture-selection task confirm the effects of semantic prominence and relative clause types on comprehension of relative clauses. They also demonstrate age-related variations that younger children are more dependent on the semantic prominence of the head noun while older children are more affected by the type of relative clause.