丙三酸埋底界面工程提高氧化镍基反向平面钙钛矿太阳能电池性能  

_(B)oosting Device Performance of NiOx-Based Perovskite Solar Cells via the Tricarballylic Acid Buried Interface Engineering Strategy

作　　者：谢意 王晓峰[1] 林家盛 XIE Yi;WANG Xiaofeng;LIN Jiasheng(School of Physics and Materials Science,Nanchang University,330031,Nanchang,PRC)

机构地区：[1]南昌大学物理与材料学院,南昌330031

出　　处：《江西科学》2025年第1期162-170,共9页Jiangxi Science

基　　金：江西省自然科学基金面上项目(20242BAB25097)。

摘　　要：近年来,采用氧化镍(NiO_(x))作为空穴传输层(HTL)的反向平面钙钛矿太阳能电池(PSCs)因其制备工艺简单、迟滞效应小、成本低受到研究人员的广泛关注。然而,在NiO_(x)基反向平面PSCs中,NiO_(x)/钙钛矿界面处往往存在缺陷密度高、能级不匹配等问题,限制了其性能提升。基于此,提出丙三酸(TCA)埋底界面工程策略,即采用TCA修饰改性NiO_(x)/钙钛矿界面,以提高PSCs效率和稳定性。研究结果表明,TCA分子中的羧酸功能基团能够与NiO_(x)发生相互作用,从而有效钝化界面缺陷,优化NiO_(x)/钙钛矿界面能级排列。同时,TCA的引入还能有效调控钙钛矿薄膜结晶生长行为,制备出高质量钙钛矿层。最终,基于该TCA埋底界面工程,PSCs的光电转换效率(PCE)从18.39%提升至21.59%,且稳定性也得到了明显改善。In recent years,inverted planar perovskite solar cells(PSCs)usin g nickel oxide(NiO_(x))as the hole transport layers(HTLs)have garnered significant attention due to their simple fabrication process,reduced hysteresis effect and low cost.However,issues such as high density of interfacial defects and imperfect energy level alignment at the NiO_(x)/perovskite interface often hinder the enhancement of performance of NiO_(x)-based inverted planar PSCs.Herein,a tricarballylic acid(TCA)buried interface engineering strategy is proposed to modify the NiO_(x)/perovskite interface,thereby boosting the efficiency and stability of PSCs.The results show that the carboxyl functional groups in the TCA molecule can interact with NiO_(x),thus effectively passivating interfacial defects and optimizing the energy level alignment at the NiO_(x)/perovskite interface.Additionally,the application of TCA can regulate the crystal growth behavior of the perovskite,resulting in a high-quality perovskite layer.Consequently,employing the TCA buried interface engineering strategy,the power conversion efficiency(PCE)of PSCs is significantly enhanced from 18.39%to 21.59%,along with the improved stability.

关 键 词：钙钛矿太阳能电池 丙三酸 埋底界面工程 效率 稳定性 

分 类 号：TM914.4[电气工程—电力电子与电力传动]