【摘 要】
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The hole transport layer (HTL) is one of the main factors to improve the photoelectric performance of perovskite solar cells (PSC).Spiro-OMeTAD is commonly used as a hole transport material in PSC.How
【机 构】
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Engineering Research Center of Environment-Friendly Functional Materials, Ministry of Education,Fuji
【出 处】
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第八届新型太阳能材料科学与技术学术研讨会
论文部分内容阅读
The hole transport layer (HTL) is one of the main factors to improve the photoelectric performance of perovskite solar cells (PSC).Spiro-OMeTAD is commonly used as a hole transport material in PSC.However,the original or oxygen-oxidized spiro-OMeTAD has lower mobility and conductivity.In this paper,cumene hydroperoxide (CHP) is introduced to accelerate the oxidation ofspiro-OMeTAD,thereby improving carrier mobility,reducing the density of trap states and optimizing the energy matching with the perovskite layer,thereby improving the performance of the device.Multiple electrochemical characterizations show that after modification,the spiro-OMeTAD oxidation is accelerated,the conductivity of the doped hole transport material is improved,the density of trap states in the hole transport layer/perovskite interface and the annihilation of carriers decline.The power conversion efficiency (PCE) of the perovskite solar cell doped with the optimal concentration is greatly improved compared with the pristine device.
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