在近年的研究之中，有機鈣鈦礦太陽能電池雖然發展飛速，但其穩定性由於鈣鈦礦層對水、氧敏感的特性以及其他也容易受影響的有機材料而一直是人們研究的主軸。在此論文裡，我們採取超音波噴霧熱裂解沉積法製備氧化鉻銅p型半導體薄膜取代被廣泛使用但卻被證實擁有吸水性和酸性對鈣鈦礦不利的PEDOT:PSS。首先，氧化鉻銅的價帶頂與鈣鈦礦層MAPbI3匹配，能夠有效的輔助載子的分離與運輸，最佳化元件的開路電壓，且其具有大約2.9電子伏特的寬能隙，不僅可以阻擋來自主動層的電子即反向電流，對應的吸收波長在紫光區也有效的避免鈣鈦礦層因吸收紫外光而造成的降解，而氧化鉻銅身為金屬氧化層也有著比其他有機材料更優越的穩定性和可靠度。此外，在這篇論文中我們使用了超音波噴霧熱裂解沉積法沉積氧化鉻銅薄膜，此方法具有快速、製程簡便和高均勻性等優點，可以製作出緻密且可自由調變厚度的高品質半導體薄膜，且在非真空環境下工作，應用在鈣鈦礦太陽能電池的製程內不僅更進一步降低了成本，也增加了優勢。最後我們以超音波噴霧熱裂解法沉積氧化鉻銅薄膜作為電洞傳輸層完成高穩定性的鈣鈦礦太陽能電池。

In recent years, organic perovskite solar cells have developed rapidly, but their stability has been the key point of research due to the perovskite layer and other organic materials that are susceptible for moisture and oxygen. In this thesis, we apply ultrasonic spray pyrolysis deposition method to prepare p-type copper-chromium oxide semiconductor film to replace PEDOT:PSS which is widely used but has been proven that its acidity and hygroscopicity is detrimental to perovskite.
First, the valence band top of the chromium oxide copper is matched with the perovskite layer, MAPbI3, which effectively assist the separation and transportation of the carrier and optimize the open circuit voltage of the component. Thus, its wide energy gap about 2.9 eV can not only block electrons from the active layer as known as reverse currents, and the corresponding absorption wavelength is also effective in the violet region to avoid degradation of the perovskite layer due to absorption of ultraviolet light, much more CuCrO2 as metal oxide is also superior to other organic materials with stability and reliability. In addition, in this paper, we used ultrasonic spray pyrolysis deposition to deposit CuCrO2 film. This method has the advantages of fast, simple process and high uniformity, then can produce high quality, compact and adjustable thickness thin film in non-vacuum ambient environment. Therefore, it is suitable for applying to the process of metal oxide layer in perovskite solar cells to further reduce costs and enhance performance. Finally, we utilize ultrasonic spray pyrolysis method to deposit copper-chromium oxide film as the hole transport layer to complete high stability perovskite solar cells.

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