||Optical bandgap and Hall effect of Sn1-xSbxS nanocrystals
||Department of Materials Science and Engineering
Sb-doped SnS nanocrystals
solar energy materials
本研究以高壓釜在180℃合成摻雜Sb的單一SnS相奈米晶，並探討其電性及光學性質。Sb於SnS晶體中的固溶度約為7 at%。SnS試樣在Sb濃度低於5 at%時仍為p型，當濃度達7 at%時便轉換為n型。隨著SnS中Sb摻雜濃度的上升，能隙值由1.27 eV增加至1.37 eV。目前的研究顯示，有潛力製造具能隙調控的SnS/SnS:Sb之p-n同質接面，使其應用在太陽能電池。
The electrical and optical properties of Sb-doped SnS nanocrystals with single phase synthesized in an autoclave at 180℃ were explored. The substitution solubility of Sb in SnS is about 7 at%. The samples with the Sb concentration below 5 at% remain p-type, while those with the Sb concentration at 7 at% convert to the n-type nature. The bandgap of Sb-doped SnS increases from 1.27 to 1.37 eV with increasing the Sb concentration. The present study reveals that it may be promising to fabricate the SnS/SnS:Sb p-n homojunction with the tunable bandgap for applications in solar cell devices.
Extended Abstract II
第一章 引言 1
第二章 文獻回顧 4
2.1.1光伏特效應(Photovoltaic effect) 4
2.1.2光傳導效應(Photoconductive effect) 5
2.3.2 SnS奈米晶的合成法與特性簡介 11
第三章 實驗步驟與方法 19
3.1 液相合成在高壓釜(autoclave)中合成Sn1-xSbxS奈米晶 19
3.2 材料特性分析 20
3.2.1 X光繞射儀(X-ray Diffractometer)[67,68] 20
3.2.2 掃描式電子顯微鏡(Scanning Electron Microscope, SEM)  22
3.2.3 穿透式電子顯微鏡(Transmission Electron Microscope, TEM) [67,69] 24
3.2.4 X光能量散佈分析儀(Energy Dispersive X-ray Spectrometer, EDS)  25
3.2.5 紫外/可見光(UV-vis)光譜儀[70-74] 27
3.2.6 化學分析電子光譜儀(Electron Spectroscopy for Chemical Analysis, ESCA) 28
3.2.7 霍爾效應分析儀 (Hall Effect Analyzer )[76,77] 30
第四章 結果與討論 32
4.2 SnS和Sn1-xSbxS奈米晶微結構 33
4.3 SnS與Sn1-xSbxS奈米晶之光學性質 35
4.4 Sb摻雜對Sn1-xSbxS奈米晶之電性影響 36
第五章 結論 38
JCPDS Cards No. 00-039-0354 (SnS) 73
JCPDS Cards No. 00-026-1481 (Si) 74
霍爾量測電性數據 (SnS),電流：100 μA 75
霍爾量測電性數據 (Sn0.94Sb0.06S) ,電流：2.00 μA 76
霍爾量測電性數據 (Sn0.90Sb0.10S) ,電流：0.15 μA 77
霍爾量測電性數據 (Sn0.86Sb0.14S) ,電流：0.05 μA 78
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