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完整後設資料紀錄
DC 欄位 | 值 | 語言 |
---|---|---|
dc.contributor.advisor | 梁啟德(Chi-Te Liang) | |
dc.contributor.author | Chi-Huang Chang | en |
dc.contributor.author | 張啟皇 | zh_TW |
dc.date.accessioned | 2021-06-16T02:29:04Z | - |
dc.date.available | 2020-09-25 | |
dc.date.copyright | 2015-09-25 | |
dc.date.issued | 2015 | |
dc.date.submitted | 2015-07-31 | |
dc.identifier.citation | [1] Cheng, Ziyong, CrystEng Comm, 2010, 12.10, 2646-2662.
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dc.identifier.uri | http://tdr.lib.ntu.edu.tw/jspui/handle/123456789/53758 | - |
dc.description.abstract | 本研究將表面覆有I^-配體的硫化鉛奈米晶體(PbS/I^-)混入CH3NH3PbI3-xClx前驅物溶液中來改變鈣鈦礦的結晶行為。在結晶過程中,硫化鉛量子晶體表面的I^-配體將與CH3NH3PbI3-xClx的前驅物反應使CH3NH3PbI3-xClx在奈米晶體表面異質成核,原本於空間中均勻分散的晶核核點因此集中於PbS奈米晶體表面異質成核,這使得鈣鈦礦於成長時具有較大的成長空間。我們發現於此條件下成長完成之後的CH3NH3PbI3-xClx晶粒大小達4μm。我們後續將此鈣鈦礦製作成FTO/TiO2/CH3NH3PbI3-xClx/Spiro OMeTad/Au 之平面結構太陽能電池,我們發現,此太陽能電池之填充因子高達77.60%,且光電轉換效率為16%,我們推測這是因為鈣鈦礦晶粒的變大而使得其載子傳輸性質提升。為了瞭解晶粒大小與載子傳輸性質關係,本研究利用時間解析光致螢光與雙極性載子傳輸方程搭配特殊的CH3NH3PbI3-xClx元件結構來分析CH3NH3PbI3-xClx的載子擴散長度。由測量的結果發現,晶粒較大的鈣鈦礦薄膜具有較長的電子與電洞擴散長度(1405nm與1329nm)。我們推測係因大晶粒的鈣鈦礦單位長度內的晶粒邊界較少,使得載子在其中得以更加順利的擴散至電極,如此可以說明混入PbS/I^-之鈣鈦礦太陽電池如何具有優異的表現。根據此研究的結果,我們可以藉由PbS/I^-奈米晶體與CH3NH3PbI3-xClx的混合,而得到晶粒較大的CH3NH3PbI3-xClx薄膜,且其具有優異的載子傳輸性質,因此我們得以製作出表現較佳的CH3NH3PbI3-xClx太陽能電池。 | zh_TW |
dc.description.abstract | In this work, we proposed a new idea using inorganic nanocrystals of PbS/I^- as additive and nucleus to improve thin film morphology in planar perovskite (CH3NH3PbI3Cl3-x) solar cells by promoting heterogeneous nucleation of perovskite crystals. By mixing PbS/I^- nanocrystals into perovskite precursor, our proposed method showed a large improvement in gran size (exceeded 4 um) and superior photon to electron converting efficiency of FTO/TiO2/CH3NH3PbI3-xClx/Spiro OMeTad/Au planar structure solar cell ( PCE=16% FF=77.60% ). We proposed the increase of Jsc and FF could be attributed to greater carrier transport properties. We performed diffusion length measurements of large grain perovskite by TRPL quench dynamic and ambipolar transport equation. Both electron and hole diffusion length of large grain perovskite are longer than the normal one (1405nm and 1329nm). This result indicates that the smaller trap densities in these larger grain size crystals, and therefore reduced charge transfer resistance across the perovskite crystal that grew from PbS/I^-, so that achieved the higher FF and Jsc. Once the grain size of perovskite was increased by PbS/I^-. The charge traps which photo-generated carrier encountered under diffusion process are less than the pristine sample, therefore we can perform high efficiency perovskite solar cell. | en |
dc.description.provenance | Made available in DSpace on 2021-06-16T02:29:04Z (GMT). No. of bitstreams: 1 ntu-104-R02222005-1.pdf: 8845002 bytes, checksum: f6ec8668d45d77a7fb86257484823920 (MD5) Previous issue date: 2015 | en |
dc.description.tableofcontents | 口試委員會審定書 I
誌謝 II 摘要 III Abstract IV 第一章 緒論 1 1.1太陽能電池 1 1.2有機-無機鈣鈦礦 5 1.3 CH3NH3PbI3-xClx太陽能電池與基本運作機制 12 1.4 CH3NH3PbI3-xClx的成膜與結晶機制 19 1.5 有機-無機之鈣鈦礦薄膜品質對元件的影響 22 1.6 研究動機 28 第二章 研究背景 29 2.1太陽能電池的特性量測 29 2.2半導體的基本光學性質 34 2.2.1半導體的能帶結構對光學性質的影響 34 2.2.2半導體的光吸收 34 2.2.3半導體光致螢光 36 2.3光激發之載子擴散長度測量方法 39 2.3.1緣起 39 2.3.2雙極性載子傳輸方程 39 2.3.3時間解析光致螢光 43 2.3.4擴散長度的測量 45 第三章 元件製程與儀器介紹 51 3.1緣起 51 3.2 PbS/I-製備方法 51 3.2.1 PbS/OA 奈米晶體之合成步驟 51 3.2.2 PbS奈米晶體的配體置換步驟 52 3.3 太陽能電池收光層之溶液配製 53 3.3.1鈣鈦礦前驅物溶液的配製 53 3.3.2鈣鈦礦前驅物與PbS/I-混合溶液的配製 53 3.4元件製程 55 3.4.1平面異質結構太陽能電池製程 55 3.4.2擴散長度量測的樣品製程 56 3.5實驗儀器: 58 3.5.1 EQE 量測 58 3.5.2 X光繞射分析儀 59 3.5.3穿透式電子顯微鏡 59 3.5.4掃描式電子顯微鏡 60 3.5.5紫外光-可見光-近紅外光吸收光譜 60 3.5.6傅立葉紅外光譜儀 61 3.5.7旋轉塗佈機 62 3.5.8真空鍍機 62 3.5.9太陽光模擬器及電流密度-電壓特性量測設備 63 3.5.10光致螢光與時間解析光致螢光 64 3.5.11 X射線光電子能譜儀 66 3.5.12 藥品 67 第四章 結果與討論 68 4.1硫化鉛量子晶體性質 68 4.2鈣鈦礦與PbS/I-奈米晶體之混合薄膜 71 4.3太陽能電池元件表現 76 4.4鈣鈦礦薄膜之載子擴散長度測量 80 第五章 結論 83 第六章 未來展望 85 參考資料 86 | |
dc.language.iso | zh-TW | |
dc.title | 鈣鈦礦太陽能電池之異質成核機制與其光電性質研究 | zh_TW |
dc.title | Nanocrystals Assisted Heterogeneous-Nucleation at Grain Growth of High-Performance Perovskite Solar Cells | en |
dc.type | Thesis | |
dc.date.schoolyear | 103-2 | |
dc.description.degree | 碩士 | |
dc.contributor.coadvisor | 陳俊維(Chun-Wei Chen) | |
dc.contributor.oralexamcommittee | 邱雅萍,陳良益 | |
dc.subject.keyword | PbS,鈣鈦礦,奈米晶體,CH3NH3PbI3-xClx,太陽能電池, | zh_TW |
dc.subject.keyword | PbS,Perovskite,CH3NH3PbI3-xClx,Nanocrystal,Solar cell, | en |
dc.relation.page | 88 | |
dc.rights.note | 有償授權 | |
dc.date.accepted | 2015-08-03 | |
dc.contributor.author-college | 理學院 | zh_TW |
dc.contributor.author-dept | 物理研究所 | zh_TW |
顯示於系所單位: | 物理學系 |
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