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標題: 硫化鉛膠體量子點在氣體感測之研究
Study of PbS Colloidal Quantum Dots in Gas Sensor
作者: 李御寧
Yu-Ning Li
關鍵字: 量子點;硫化鉛;氣體感測;Quantum dots;Lead Sulfide;gas sensor
引用: [1] 徐玉峰, 內空氣環境綜合評估指標之探討-以台灣南部工業區辦公大樓為例, 國立成功大學建築研究所(1999). [2] 張凱為, 高靈敏銦鎵鋅氧薄膜氣體感測器特性研究, 國立中興大學奈米科學研究所(2015). [3] 國家環境毒物研究中心. [4] 行政院竟保護署主管法規查詢系統. [5] 林文彬, 量子點結構與光譜性質關聯之探討, 國立中山大學材料科學研究所(2015). [6] 劉俊傑, 鉛銻硫三元金屬硫化物半導體敏化太陽能電池, 國立中興大學奈米科學研究所(2013). [7] C Jackson Stolle, Taylor B Harvey and Brian A Korgel, Nanocrystal photovoltaics: a review of recent progress, Current Opinion in Chemical Engineering, 2(2013)160-167. [8] Abdelrazek Mousa, Synthesis and Characterization of PbS Quantum Dots, Lund University the Department of Chemical Physics(2011). [9] Huan Liu, Min Li, Oleksandr Voznyy, Long Hu, Qiuyun Fu, Dongxiang Zhou, Zhe Xia, Edward H. Sargent, and Jiang Tang, Physically Flexible, Rapid-Response Gas Sensor Based on Colloidal Quantum Dot Solids, Adv.Mater. 26 (2014) 2718–2724. [10] 李敏, 硫化鉛膠體量子點薄膜氣敏特性與機理研究, 華中科技大學(2016). [11] Min Lia, Dongxiang Zhoua, Jun Zhaoa, Zhiping Zhenga, Jungang Hea, Long Hub,Zhe Xiab, Jiang Tangb, Huan Liu, Resistive gas sensors based on colloidal quantum dot (CQD) solids forhydrogen sulfide detection, Sensors and Actuators B 217 (2015) 198–201. [12] Noboru Yamazoe, Go Sakai, Kengo Shimanoe, Oxide Semiconductor Gas Sensors, Catalysis Surveys from Asia 7 (2003) 66-75. [13] Werner Weppner, Solid-state electrochemical gas sensors, Sensors and Actuators, 12 (1987) 107-119. [14] Inoue T, Fujimori Y, Kato Y, Matsuura, Y, A new and environmentally friendly liquid electrolyte gas sensor, Sensors Proceedings of IEEE, 1 (2004) 138-141. [15] Chi-Hwan Han, Dae-Woong Hong, Sang-Do Han, Jihye Gwak, Krishan C. Singh, Catalytic combustion type hydrogen gas sensor using TiO2 and UV-LED, Sensors and Actuators B:Chemical, 125 (2007) 224-228. [16] 江國禎, 非晶銦鎵鋅氧薄膜臭氧氣體感測器,國立中興大學奈米科學研究所 (2014). [17] Sarah Millar, Tips and Tricks for the Lab: Air-Sensitive Techniques (1), Wiley-VCH Verlag GmbH & Co. KGaA, Weinheim, 2013. [18] Lalit Kumar Sharma1, M. S. Inpasalini1, Samrat Mukherjee1, Defect induced ferromagnetism in luminescent and doped CdS quantum dots, Mater Electron (2015) 26:7621–7628. [19] Fangfang Gao, Qian Chen, Xiaoshan Zhang, Huan Wang, Tianjiao Huang, Liya Zhou, ZnO/TiO2 core–shell heterojunction for CdS and PbS quantum dot-cosensitized solar cells, Current Applied Physics 18 (2018) 546–550.
本次研究採用熱注入法合成硫化鉛膠體量子點(Lead Sulfide Colloidal Quantum Dots, PbS CQDs)並塗覆在基板上形成薄膜量子點。
利用紫外-可見光光譜儀、X光繞射、掃描式電子顯微鏡以及穿透式電子顯微鏡觀測材料特性。X光繞射圖譜中發現與標準卡(JCPDS 01-078-1057)是吻合的,而在掃描式電子顯微鏡中薄膜表面的孔洞證實亞硝酸鈉(NaNO3)是能夠有效的去除表面油基來達到吸附氣體。在無照光下通入臭氧探討其電性變化,當濃度愈高時反應愈好但高濃度的脫附時間也比較久,為縮短脫附時間嘗試照光的方法來探討。

The quantum dots have the special characteristic that the traditional materials do not have. The sizes of different particle have the different energy gap. Large surface area is an advantage for the gas adsorption. Base on this view, we choose quantum dots as our material in this work.
In this study, the Lead Sulfide Colloidal Quantum Dots (PbS CQDs) are synthesized by hot injection method and prepare the film by spin coating.
Material characteristics were observed UV-vis Spectrum, X-ray diffraction, Scanning Electron Microscope and Transmission Electron Microscope. The X-ray diffraction pattern was consistent with JCPDS and the pores on the surface of the film in the scanning electron microscope confirmed that sodium nitrite (NaNO3) was effective in removing surface oil groups. The electrical properties of PbS films were measured for sensing ozone gas with and without LED irradiation. It had better reaction and longer desorption time when higher concentration. To try to shorten the desorption time and use illuminate.
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