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| DC 欄位 | 值 | 語言 |
|---|---|---|
| dc.contributor.advisor | 陳奕君(I- Chun Cheng) | |
| dc.contributor.author | MOHANA SRUTHI MALLELA | en |
| dc.contributor.author | 莫函娜 | zh_TW |
| dc.date.accessioned | 2021-07-10T21:34:14Z | - |
| dc.date.available | 2021-07-10T21:34:14Z | - |
| dc.date.copyright | 2020-08-24 | |
| dc.date.issued | 2020 | |
| dc.date.submitted | 2020-08-20 | |
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| dc.identifier.uri | http://tdr.lib.ntu.edu.tw/jspui/handle/123456789/76634 | - |
| dc.description.abstract | The development of solar cells has emerged to be the best solution for the ongoing shortage of energy worldwide today. Among various solar cells, perovskite solar cells have achieved significant progress in the short duration when compared to other solar cells. Perovskite not only exploits the potential of large-area cells but also opens up the field of flexible substrates. Thus, in this research study, we focused on the development of glass perovskite solar cells and flexible perovskite solar cells by various techniques which improved the power conversion efficiency of the device. We even used the effective process like solution process to deposit the electron- transport layer (ETL), light-absorbing layer, and hole-transport layer (HTL) which effectively produces the high-quality film, and we used a low-temperature process technique for the TiO2 (ETL) deposition to reduce the energy consumption during the production. We post treated the TiO2 layer (ETL) with a low temperature (<40°C) dielectric barrier discharge (DBD) jet using the Helium gas, and mixture gas with He – 95%, and O2 -5% as the carrier gases. We treated both the glass and flexible perovskite solar cells with the DBD-jet. We varied the scan parameters such as scan speed from 1 cm/s – 3 cm/s, and by scanning from 5 – 15 times, maintained at a scan height of 1.5 cm, and determined the device performance for the perovskite solar cells. Whereas, we varied the scan height from 4 cm – 6 cm, and scan speed from 1 cm/s – 3 cm/s, and by scanning 5 – 15 times and determined the device performance for the flexible perovskite solar cells. We considered the optimum scan parameters and found that the device performance has been improved when compared to that of the device without the DBD-jet treatment for both the glass and flexible perovskite solar cells using the two carrier gases. By using He-DBDjet to treat the ETL, the glass perovskite solar cells exhibited improvement in its power conversion efficiency (PCE) from 13.91% to 14.43%, whereas the flexible perovskite solar cells exhibited improvement in its power conversion efficiency from 12.3% to 13.6%. When the mixture gas (He + O2) DBD-jet is used to treat the ETL, then the glass perovskite solar cells improved its power conversion efficiency (PCE) from 13.91% to 14.3%, whereas the flexible perovskite solar cells improved its power conversion efficiency from 12.3% to 13.37%. Several material analyses such as EIS, XPS, XRD, water contact angle determination, SEM, and AFM are conducted to confirm the results. | zh_TW |
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| dc.description.tableofcontents | Acknowledgment ii Abstract iii Table of Contents v List of Figures ix List of Tables xiv Chapter 1: Introduction 1 1.1 Background of the study 1 1.1.1 World energy development 1 1.1.2 History of solar cell development 2 1.2 Research motivation 4 1.3 Thesis structure 5 Chapter 2: Literature review 7 2.1 Solar cells 7 2.1.1 Principle and structure of solar cells 7 2.1.2 Basic characteristics of solar cells 8 2.2 Perovskite solar cells 11 2.2.1 Perovskite materials 11 2.2.2 Working principle of perovskite solar cells 12 2.2.3 Architecture of perovskite solar cells 15 2.2.4 Materials for perovskite solar cell 17 2.3 Plasma system 20 2.3.1 Introduction to plasma 20 2.3.2 Working principle of DBD 23 2.3.3 Application in perovskite solar cells 23 Chapter 3: Research Methods 25 3.1 Process Equipments 25 3.1.1 Nitrogen Glove Box 25 3.1.2 Rotary coating system 26 3.1.3 Helium Dielectric barrier discharge jet (DBD) system 28 3.1.4 Ultraviolet ozone (UVO) system 30 3.2 Measurement analysis 31 3.2.1 Solar simulator 31 3.2.2 Scanning electron microscope 33 3.2.3 Atomic force microscope 34 3.2.4 X-ray photoelectron spectrometer 36 3.2.5 X-ray diffraction 37 3.2.6 Electrochemical Impedance Spectroscopy 38 3.3 Experimental materials list 39 3.4 Fabrication process 40 3.4.1 Substrate cleaning 41 3.4.2 Electron-transport layer deposition 42 3.4.3 DBD-jet post-treatment 42 3.4.4 Light-absorption layer deposition 43 3.4.5 Hole-transport layer deposition 44 3.4.6 Contact electrode deposition 45 Chapter 4: Results and Discussion 46 4.1 The effect of different substrates on the performance of perovskite solar cells 46 4.1.1 Substrate comparision 46 4.1.3 The effect of different substrates on the characteristic parameters of the perovskite solar cells 46 4.1.2 The effect on different substrates by using low-temperature TiO2 as electron transport layer (ETL) 49 4.2 The effect of dielectric-barrier discharge jet (DBD) for devices on-glass substrates 52 4.2.1 The effect of scanning speed of DBD jet for on-glass devices 52 4.2.2 The effect of number of scans of DBD jet for on-glass devices 54 4.2.3 The effect of carrier gases of DBD jet for on-glass devices 56 4.2.4 SEM analysis of the plasma-treated TiO2 ETL on glass substrate 59 4.2.5 AFM analysis of the plasma-treated TiO2 ETL on glass substrate 60 4.2.6 XRD analysis of the plasma-treated TiO2 ETL on glass substrate 61 4.2.7 Water contact angle of the plasma-treated TiO2 ETL on glass substrate 63 4.2.8 XPS analysis of the plasma-treated TiO2 ETL on glass substrate 64 4.2.9 EIS analysis of plasma-treated TiO2 ETL for on-glass devices 66 4.3 The effect of dielectric-barrier discharge jet (DBD) for devices on-flexible substrates 68 4.3.1 The effect of scanning height of DBD jet for on-flexible devices 69 4.3.2 The effect of scanning speed of DBD jet for on-flexible devices 72 4.3.3 The effect of number of scans of DBD jet for on-flexible devices 74 4.3.4 The effect of carrier gases of DBD jet for on-flexible devices 75 4.3.5 SEM analysis of the plasma-treated TiO2 ETL on flexible substrate 78 4.3.6 AFM analysis of the plasma-treated TiO2 ETL on flexible substrate 79 4.3.7 XRD analysis of the plasma-treated TiO2 ETL on flexible substrate 81 4.3.8 Water contact angle of the plasma-treated TiO2 ETL on flexible substrate 82 4.3.9 XPS analysis of the plasma-treated TiO2 ETL on flexible substrate 83 4.3.10 EIS analysis of plasma-treated TiO2 ETL for on-flexible devices 85 Chapter 5: Conclusions 88 Appendix A: The Effect of UV ozone treatment for the perovskite solar cells 89 A.1 The effect of perovskite solar cells without the UV ozone treatment 89 A.2 Experimental statistics 91 A.2.1 The effect of scanning heights of DBD jet for-on flexible devices 91 A.2.2 J-V curves 95 A.2.3 Effect of forward scan 101 References 104 | |
| dc.language.iso | en | |
| dc.subject | Electron transport layer (ETL) | zh_TW |
| dc.subject | n-i-p perovskite solar cell | zh_TW |
| dc.subject | Scan parameters | zh_TW |
| dc.subject | Dielectric barrier discharge (DBD) jet | zh_TW |
| dc.subject | Flexible perovskite solar cell | zh_TW |
| dc.title | 常壓介電質放電噴射電漿改質二氧化鈦於可撓性nip鈣鈦礦太陽能電池之應用 | zh_TW |
| dc.title | Dielectric Barrier Discharge Jet (DBD) Processed TiO2 Layer for Flexible Perovskite Solar Cells | en |
| dc.type | Thesis | |
| dc.date.schoolyear | 108-2 | |
| dc.description.degree | 碩士 | |
| dc.contributor.oralexamcommittee | 陳建兆(Jian-Zhang Chen),吳育任(Yuh-Renn Wu),徐振哲(Cheng-Che Hsu) | |
| dc.subject.keyword | n-i-p perovskite solar cell,Flexible perovskite solar cell,Dielectric barrier discharge (DBD) jet,Scan parameters,Electron transport layer (ETL), | zh_TW |
| dc.relation.page | 110 | |
| dc.identifier.doi | 10.6342/NTU202004126 | |
| dc.rights.note | 未授權 | |
| dc.date.accepted | 2020-08-20 | |
| dc.contributor.author-college | 電機資訊學院 | zh_TW |
| dc.contributor.author-dept | 光電工程學研究所 | zh_TW |
| 顯示於系所單位： | 光電工程學研究所 | |
文件中的檔案：
| 檔案 | 大小 | 格式 | |
|---|---|---|---|
| U0001-2008202010090400.pdf 未授權公開取用 | 3.81 MB | Adobe PDF |
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