사이즈 조절 가능한 AgSbS2 양자점 : 합성, 분석 및 그 응용
Size Tunable Novel AgSbS2 Quantum dots: Synthesis, Characterization and Applications
- 주제(키워드) 양자점 , AgSbS2
- 발행기관 아주대학교
- 지도교수 김상욱
- 발행년도 2015
- 학위수여년월 2015. 8
- 학위명 석사
- 학과 및 전공 일반대학원 분자과학기술학과
- 실제URI http://www.dcollection.net/handler/ajou/000000020766
- 본문언어 영어
- 저작권 아주대학교 논문은 저작권에 의해 보호받습니다.
초록/요약
One of the I-V-VI semiconductors, Silver antimony sulfide (AgSbS2) has the various advantages for photovoltaic device. It has bulk direct band gap of about 1.7 eV which is suitable range for solar cell, and high absorption coefficient. However, the research of AgSbS2 has been limited to thin films by microwave irradiation, successive ionic layer adsorption and reaction (SILAR) method. AgSbS2 has not been synthesized in QDs by colloidal method. We report for the first time synthesis of AgSbS2 QDs by colloidal method. It can control QDs size by surfactant ratio. TEM and XRD show that particle sizes were controlled from 6.5 nm to 18 nm. Additionally, AgSbS2 QDs is characterized by various techniques including absorption, XPS, CV. We fabricated n-p hetero-junction photovoltaic cell using AgSbS2 QD as absorber material. The AgSbS2 QDs device show Jsc of 6.9 mA/cm2, Voc of 0.45 V, fill factor 37 %, and an overall power conversion efficiency (η) of 1.15 % under AM 1.5 illumination.
more목차
Introduction 1
Experimental Section 2
Results and Discussion 5
Conclusions 9
Figure 10
References 19
