Metal oxide barrier layers for terrestrial and space perovskite photovoltaics
Metal oxide barrier layers for terrestrial and space perovskite photovoltaics
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DOI：
10.1038/s41560-022-01189-1
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发表时间：
2023-01-26
期刊：
影响因子：
56.7
通讯作者：
Luther, Joseph M.
中科院分区：
文献类型：
--
作者：
Kirmani, Ahmad R.;Ostrowski, David P.;Luther, Joseph M.
Percent photopolymics在空间应用方面很有前途，但其可靠性需要解决。现在，Kirmani等人提出了一种1 μ m厚的氧化硅，它可以提供质子、α粒子和原子氧的防护。虽然陆地条件要求对潮湿和局部阴影等压力源具有持久性，但空间带来了不同的挑战：辐射、原子氧、真空和高温操作。在这里，我们展示了一个氧化硅层，硬化钙钛矿photoproteics临界空间应力。在器件接触顶部蒸发的1 μ m厚的氧化硅层在10（15）cm（-2）的注量下阻挡0.05 MeV的质子，而不损失功率转换效率，这导致器件寿命在低地球轨道上增加x20，在高椭圆轨道上增加x30。氧化硅保护的Cs-0.05（MA（0.17）FA（0.83））（0.95）Pb（I0.83Br 0.17）（3））（MA，甲基铵; FA，甲脒阳离子）和CsPbI 2Br电池在水和N，N-二甲基甲酰胺中浸没后仍能存活。此外，提高了Sn-Pb和CsPbI_2Br器件的耐湿性。还发现器件在暴露于α辐射和原子氧时保持功率转换效率。这种屏障技术是朝着空间和地面应用的轻质包装设计迈出的一步。
Perovskite photovoltaics are promising for space applications, but their reliability needs to be addressed. Now, Kirmani et al. present a 1-mu m-thick silicon oxide that affords protection against protons, alpha particles and atomic oxygen.Perovskite photovoltaics are attractive for both terrestrial and space applications. Although terrestrial conditions require durability against stressors such as moisture and partial shading, space poses different challenges: radiation, atomic oxygen, vacuum and high-temperature operation. Here we demonstrate a silicon oxide layer that hardens perovskite photovoltaics to critical space stressors. A 1-mu m-thick silicon oxide layer evaporated atop the device contacts blocks 0.05 MeV protons at fluences of 10(15) cm(-2) without a loss in power conversion efficiency, which results in a device lifetime increase in low Earth orbit by x20 and in highly elliptical orbit by x30. Silicon-oxide-protected Cs-0.05(MA(0.17)FA(0.83))(0.95)Pb(I0.83Br0.17)(3)) (MA, methylammonium; FA, formamidinium cation) and CsPbI2Br cells survive submergence in water and N,N-dimethylformamide. Furthermore, moisture tolerance of Sn-Pb and CsPbI2Br devices is boosted. Devices are also found to retain power conversion efficiencies on exposure to alpha irradiation and atomic oxygen. This barrier technology is a step towards lightweight packaging designs for both space and terrestrial applications.