本研究開發貼片天線與鈣鈦礦太陽能電池的整合元件，製做同時具有收發電磁波訊號並且可以將太陽能轉換成電力的雙功能元件，此元件稱為綠能天線。綠能天線的結構中，我們提出創新的構想，利用鈣鈦礦太陽能電池做為天線的接地平面，並且為了讓天線底部的太陽能電池可以正常使用，我們使用透明的 PMMA 做為天線的介質基板覆蓋在鈣鈦礦太陽能電池上，並且以同樣透明的導電材料做為天線的貼片塗布至介質基板上，如此一來太陽能電池所需的光線便不會被天線所遮蔽。
本論文主要將分為兩大部分，第一個部分為使用高頻電磁模擬軟體HFSS 設計天線，而為了減少結構的複雜度，我們將鈣鈦礦太陽能電池的結構進行簡化，然後再將簡化後的太陽能電池套用至模擬的天線結構，並且透過調變太陽能電池的上下電極、半導體吸收層以及天線的貼片、微帶線等部位的導電度、介電常數以及厚度等的材料參數，來觀察以上變化對天線增益造成的影響，最後再透過以上模擬中得到的結果，設計出能將天線增益最佳化並且適合應用在綠能天線上的鈣鈦礦太陽能電池結構，並且將此結構再度套用至綠能天線中，最後再和一般常用的 FR4 貼片天線做比較。
第二個部分的研究中，PMMA 層除了做為綠能天線的介質基板外還同時做為鈣鈦礦太陽能電池的封裝層，由於有機鈣鈦礦接觸到水氣與氧氣時會降解成無法產生光響應的 δ 相以及二次相，因此鈣鈦礦元件的壽命非常短，而在我們的研究裡，我們將利用 PMMA 層來做為封裝層以阻隔水氣與氧氣與鈣鈦礦產生反應，以此延長鈣鈦礦太陽能電池的壽命，而為了研究 PMMA 封裝層的效果，我們將分別使用鈣鈦礦薄膜以及元件來做封裝測試，薄膜封裝測試的部分將會使用相機、XRD、吸收光譜等量測數據來觀察，而太陽能電池封裝測試的部分將透過量測元件電性如轉換效率(PCE)、開路電壓(Voc)、短路電流(Jsc)、填充因子(FF)等參數來觀察。
在天線的模擬中我們發現使用高導電的金屬薄膜作為鈣鈦礦太陽能電池的下電極可以大幅改善天線的增益，以及鈣鈦礦太陽能電池由於厚度非常薄的關係，因此作為綠能天線的接地平面時並不會對天線的諧振頻率以及增益造成影響，這是一般矽晶太陽能電池所沒有的優勢。而在天線模擬與實際量測的結果中，雖然因為天線實作時使用銅膠帶繞線使得天線後方產生了後波瓣，但是量測到的增益以及輻射效率與模擬結果並沒有太大的差異，因此證明我們設計的天線結構具有相當大的可行性。而在鈣鈦礦封裝的研究中我們發現 PMMA 對於薄膜封裝的效果非常的優異，使用濃度 15%wt 以上的封裝液封裝後的鈣鈦礦薄膜放置在大氣環境下經過三個禮拜後的時間，在使用肉眼觀察、XRD、吸收光譜檢測上都沒有退化的情況發生，而在元件封裝的研究中，沒有 PMMA 封裝的鈣鈦礦太陽能電池在經過 24 小時後光電轉換效率便只剩原本的一半，而經過 48小時後元件幾乎沒有效率產生，而經過封裝後的元件經過 48 小時後還能維持原本效率的 80%左右，經過 72 小時維持在原本效率的一半，最後經過 144 小時後效率才幾乎歸零，證明 PMMA 確實擁有優秀的封裝能力。

This research consists of two parts. The first part is to design the solar antenna using highfrequency electromagnetic simulation software. To reduce the complexity of the structure, the structure of the perovskite solar cell is simplified, then applied to the simulated antenna structure and observe the influences of the solar cell on the antenna by adjusting the material parameters of the solar cell, and finally using the results obtained in the above simulation to design an optimized solar antenna structure. In the second part of the research, the PMMA layer will be used as the encapsulation layer to block water vapor and oxygen from reacting with the perovskite, and to study the encapsulation effect of the PMMA, which will be observed by measuring the electrical properties of encapsulated solar cell such as power conversion efficiency (PCE), open circuit voltage (Voc), short circuit current (Jsc) and fill factor (FF).
In the antenna simulation, it is found that using highly conductive metal film as the bottom electrode of the perovskite solar cell can greatly improve the gain of the antenna, and because the structure of perovskite solar cell is very thin, it will not affect the resonant frequency and gain of the antenna, which is an advantage that ordinary crystalline silicon solar cells do not have. In the study of perovskite encapsulation, it is found that PMMA has a very excellent effect on encapsulation. The PCE of perovskite solar cells without PMMA sealing remain only half of the original PCE after 24 hours. After 48 hours, the PCE are almost close to 0%, however, the PMMA sealed soar cells can remain about 80% of the original PCE after 48 hours, and half of the original PCE after 72 hours. Finally, the PCE is almost 0% after 144 hours, proving that PMMA does have excellent encapsulation capability.

[1] E. V. A. Premalal et al., "Preparation of structurally modified, conductivity enhanced-p-CuSCN and its application in dyesensitized solid-state solar cells," Journal of Power Sources, vol. 203, pp. 288-296, 2012
[2] B. Gebremichael, G. Alemu, and G. Tessema Mola, "Conductivity of CH3NH3PbI3 thin film perovskite stored in ambient atmosphere," Physica B: Condensed Matter, vol. 514, pp. 85-88, 2017
[3] M. Sarah, M. Musa, M. Asiah, and M. Rusop, "Electrical conductivity characteristics of TiO2 thin film," 2010 International Conference on Electronic Devices, Systems and Applications, pp. 361-364, 2010
[4] A. Muthukumar et al., "Fluorine doped tin oxide (FTO) thin film as transparent conductive oxide (TCO) for photovoltaic applications," AIP Conference Proceedings, vol. 1512, pp. 710-711, 2013
[5] L. Etgar et al., "Mesoscopic CH3NH3PbI3/TiO2 heterojunction solar cells," Journal of the American Chemical Society, vol. 134, pp. 17396-17399, 2012
[6] D. Liu and T. L. Kelly, "Perovskite solar cells with a planar heterojunction structure prepared using room-temperature solution processing techniques," Nature photonics, vol. 8, pp. 133-138, 2014
[7] Z.-K. Tan et al., "Bright light-emitting diodes based on organometal halide perovskite," Nature nanotechnology, vol. 9, pp. 687-692, 2014
[8] L. Dou et al., "Solution-processed hybrid perovskite photodetectors with high detectivity," Nature communications, vol. 5, pp. 1-6, 2014
[9] E. J. Yoo, M. Lyu, J. H. Yun, C. J. Kang, Y. J. Choi, and L. Wang, "Resistive switching behavior in organic–inorganic hybrid CH3NH3PbI3−xClx perovskite for resistive random access memory devices," Advanced Materials, vol. 27, pp. 6170-6175, 2015
[10] G. A. Deschamps, "Microstrip microwave antennas," Proceedings of the Third Symposium on the USAF Antenna Research and Development Program, Oct, pp. 18-22, 1953
[11] J. Howell, "Microstrip antennas," IEEE Transactions on Antennas and Propagation, vol. 23, pp. 90-93, 1975
[12] T. Yasin and R. Baktur, "Circularly polarized meshed patch antenna for small satellite application," IEEE Antennas and Wireless Propagation Letters, vol. 12, pp. 1057-1060, 2013
[13] F. Ferrero, C. Luxey, G. Jacquemod, and R. Staraj, "Dual-band circularly polarized microstrip antenna for satellite applications," IEEE Antennas and Wireless Propagation Letters, vol. 4, pp. 13-15, 2005
[14] M. T. Islam, M. Cho, M. Samsuzzaman, and S. Kibria, "Compact antenna for small satellite applications [Antenna Applications Corner]," IEEE Antennas and Propagation magazine, vol. 57, pp. 30-36, 2015
[15] S. K. Patel and Y. Kosta, "E-shape microstrip patch antenna design for GPS application," 2011 Nirma University International Conference on Engineering, pp. 1-4, 2011
[16] H.-M. Chen, Y.-K. Wang, Y.-F. Lin, C.-Y. Lin, and S.-C. Pan, "Microstrip-fed circularly polarized square-ring patch antenna for GPS applications," IEEE Transactions on Antennas and Propagation, vol. 57, pp. 1264-1267, 2009
[17] D. Massa, "A dual frequency microstrip patch antenna for highprecision GPS applications," IEEE Antennas and Wireless Propagation Letters, vol. 3, pp. 157-160, 2004
[18] C. Hertleer, A. Tronquo, H. Rogier, L. Vallozzi, and L. Van Langenhove, "Aperture-coupled patch antenna for integration into wearable textile systems," IEEE antennas and wireless propagation letters, vol. 6, pp. 392-395, 2007
[19] D. Singh, C. Kalialakis, P. Gardner, and P. S. Hall, "Small Hshaped antennas for MMIC applications," IEEE Transactions on antennas and propagation, vol. 48, pp. 1134-1141, 2000
[20] D. Singh, P. Gardner, and P. Hall, "Miniaturised microstrip antenna for MMIC applications," Electronics letters, vol. 33, pp. 1830-1831, 1997
[21] G. Baumann et al., "51 GHz frontend with flip chip and wire bond interconnections from GaAs MMICs to a planar patch antenna," Proceedings of 1995 IEEE MTT-S International Microwave Symposium, pp. 1639-1642, 1995
[22] H. Pues and A. Van de Capelle, "Accurate transmission-line model for the rectangular microstrip antenna," IEE Proceedings H (Microwaves, Optics and Antennas), vol. 131, pp. 334-340, 1984
[23] D. Grieg and H. Engelmann, "Microstrip-A new transmission technique for the klilomegacycle range," Proceedings of the IRE, vol. 40, pp. 1644-1650, 1952
[24] R. Garg, I. Bahl, and M. Bozzi, "Microstrip lines and slotlines," 2013
[25] E. Hammerstad and O. Jensen, "Accurate models for microstrip computer-aided design," 1980 IEEE MTT-S International Microwave Symposium Digest, pp. 407-409, 1980
[26] M. Kirschning and R. H. Jansen, "Accurate model for effective dielectric constant of microstrip with validity up to millimetrewave frequencies," Electronics letters, vol. 18, pp. 272-273, 1982
[27] F. Caspers, "RF engineering basic concepts: the Smith chart," arXiv preprint arXiv:1201.4068, 2012
[28] A. Kojima, K. Teshima, Y. Shirai, and T. Miyasaka, "Organometal halide perovskites as visible-light sensitizers for photovoltaic cells," Journal of the American Chemical Society, vol. 131, pp. 6050-6051, 2009
[29] Y. Zhou et al., "Review on methods for improving the thermal and ambient stability of perovskite solar cells," Journal of Photonics for Energy, vol. 9, 2019
[30] F. Ji et al., "A balanced cation exchange reaction toward highly uniform and pure phase FA1−xMAxPbI3 perovskite films," Journal of Materials Chemistry A, vol. 4, pp. 14437-14443, 2016
[31] H. Choi et al., "Cesium-doped methylammonium lead iodide perovskite light absorber for hybrid solar cells," Nano Energy, vol. 7, pp. 80-85, 2014
[32] M. Saliba et al., "Cesium-containing triple cation perovskite solar cells: improved stability, reproducibility and high efficiency," Energy & environmental science, vol. 9, pp. 1989-1997, 2016
[33] B. Cao, L. Yang, S. Jiang, H. Lin, N. Wang, and X. Li, "Flexible quintuple cation perovskite solar cells with high efficiency," Journal of Materials Chemistry A, vol. 7, pp. 4960-4970, 2019
[34] M. Anaya, G. Lozano, M. E. Calvo, and H. Míguez, "ABX3 perovskites for tandem solar cells," Joule, vol. 1, pp. 769-793, 2017
[35] G. Han et al., "Additive Selection Strategy for High Performance Perovskite Photovoltaics," The Journal of Physical Chemistry C, vol. 122, pp. 13884-13893, 2018
[36] S. Bi et al., "Incorporating an Inert Polymer into the Interlayer Passivates Surface Defects in Methylammonium Lead Halide Perovskite Solar Cells," Chemistry, vol. 23, pp. 14650-14657, 2017
[37] Y. Han et al., "Degradation observations of encapsulated planar CH3NH3PbI3 perovskite solar cells at high temperatures and humidity," Journal of Materials Chemistry A, vol. 3, pp. 8139-8147, 2015
[38] H. Kim et al., "Enhanced Stability of MAPbI3 Perovskite Solar Cells using Poly(p-chloro-xylylene) Encapsulation," Sci Rep, vol. 9, p. 15461, 2019
[39] S. Kundu and T. L. Kelly, "Improving the moisture stability of perovskite solar cells by using PMMA/P3HT based hole-transport layers," Materials Chemistry Frontiers, vol. 2, pp. 81-89, 2018
[40] B. McKenna, J. R. Troughton, T. M. Watson, and R. C. Evans, "Enhancing the stability of organolead halide perovskite films through polymer encapsulation," RSC Advances, vol. 7, pp. 32942-32951, 2017
[41] F. Wang et al., "Highly stable perovskite solar cells with an allcarbon hole transport layer," Nanoscale, vol. 8, pp. 11882-8, 2016
[42] X. Zhang et al., "Efficient and carbon-based hole transport layerfree CsPbI2Br planar perovskite solar cells using PMMA modification," Journal of Materials Chemistry C, vol. 7, pp. 3852-3861, 2019
[43] S. Shynu, M. J. R. Ons, M. J. Ammann, S. McCormack, and B. Norton, "Dual band a-Si: H solar-slot antenna for 2.4/5.2 GHz WLAN applications," 2009 3rd European Conference on Antennas and Propagation, pp. 408-410, 2009
[44] S. V. Shynu, M. J. R. Ons, P. McEvoy, M. J. Ammann, S. J. McCormack, and B. Norton, "Integration of Microstrip Patch Antenna With Polycrystalline Silicon Solar Cell," IEEE Transactions on Antennas and Propagation, vol. 57, pp. 3969-3972, 2009
[45] A. S. Thampy, M. S. Darak, and S. K. Dhamodharan, "Analysis of graphene based optically transparent patch antenna for terahertz communications," Physica E: Low-dimensional Systems and Nanostructures, vol. 66, pp. 67-73, 2015
[46] S. Anand, D. Sriram Kumar, R. J. Wu, and M. Chavali, "Analysis and design of optically transparent antenna on photonic band gap structures," Optik, vol. 125, pp. 2835-2839, 2014
[47] E. R. Escobar, N. J. Kirsch, G. Kontopidis, and B. Turner, "5.5 GHz optically transparent mesh wire microstrip patch antenna," Electronics Letters, vol. 51, pp. 1220-1222, 2015
[48] A. Katsounaros, Y. Hao, N. Collings, and W. A. Crossland, "Optically transparent ultra-wideband antenna," Electronics Letters, vol. 45, 2009
[49] K. Ito and M. Wu, "See-through microstrip antennas constructed on a transparent substrate," 1991 Seventh International Conference on Antennas and Propagation, ICAP 91 (IEE), pp. 133-136, 1991
[50] M.-S. Wu and K. Ito, "Basic study on see-through microstrip antennas constructed on a window glass," IEEE Antennas and Propagation Society International Symposium 1992 Digest, pp. 499-502, 1992
[51] M. J. Roo-Ons, S. V. Shynu, M. J. Ammann, S. J. McCormack, and B. Norton, "Transparent patch antenna on a-Si thin-film glass solar module," Electronics Letters, vol. 47, 2011
[52] E. P. Kumar and S. Sundaravadivelu, "Design and performance analysis of solar cell antenna," 2017 International Conference on Wireless Communications, Signal Processing and Networking (WiSPNET), pp. 2739-2742, 2017
[53] C. A. Balanis, "Antenna theory: analysis and design," 2016
[54] V. Kapustianyk et al., "Resonance dielectric dispersion of TEACoCl2Br2 nanocrystals incorporated into the PMMA matrix," Journal of Physics: Condensed Matter, vol. 20, 2008
[55] A. Derneryd and A. Lind, "Cavity model of the rectangular microstrip antenna," Proc. Printed Circuit Antenna Tech. Workshop, pp. 12.1-12.11, 1979
[56] S. Bistac and J. Schultz, "Solvent retention in solution-cast films of PMMA: study by dielectric spectroscopy," Progress in organic coatings, vol. 31, pp. 347-350, 1997