Stability in 3D and 2D/3D hybrid perovskite solar cells studied by EFISHG and IS techniques under light and heat soaking
Stability in 3D and 2D/3D hybrid perovskite solar cells studied by EFISHG and IS techniques under light and heat soaking
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DOI：
10.1016/j.orgel.2018.12.009
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发表时间：
2019-03-01
影响因子：
3.2
通讯作者：
Al-Muhtaseb, Shaheen A.
中科院分区：
文献类型：
--
作者：
Ahmad, Zubair;Noma, Taishi;Al-Muhtaseb, Shaheen A.
利用电场诱导二次谐波产生（EFISHG）和阻抗谱（IS）技术研究了温度和光照浸泡对三阳离子三维（3D）和二维(2D)/三维钙钛矿太阳能电池（PSCs）稳定性和载流子行为的影响。为了制备二维/三维钙钛矿结构，采用了逐层沉积的方法。利用自旋镀工艺将基于spro - ometad的空穴输运层沉积在钙钛矿层的顶部。新制备电池的平均功率转换效率（PCE）接近18%。利用波长为960 nm的基本激光束，EFISHG对PSCs中的电场进行了选择性探测。结果表明，EFISHG技术有可能用于鉴定psc中的降解机制。此外，利用IS技术研究了光和热浸泡环境对电参数的影响。结果表明，与3D PSCs相比，2D/3D混合PSCs具有较好的稳定性和更高的效率。
We investigate the effect of temperature and light soaking on the stability and charge carrier behavior in triple cation 3-Dimensional (3D) and 2-Dimensional (2D)/3-Dimensional perovskite solar cells (PSCs) using electric field induced second harmonic generation (EFISHG) and impedance spectroscopy (IS) techniques. To prepare the 2D/3D perovskite structures, a layer-by-layer deposition method was employed. Spiro-OMeTAD based hole transport layer was deposited on the top of the perovskite layer using a spin coaling procedure. The average power conversion efficiency (PCE) of the fresh fabricated cells was similar to 18%. The electric fields in the PSCs were selectively probed by the EFISHG measurements, using the fundamental laser beam wavelength of 960 nm. The results show that the EFISHG technique could be potentially used to identify the degradation mechanism in the PSCs. Also, the IS technique was performed to investigate the electrical parameters affected under light and heat soaking environment The 2D/3D hybrid PSCs show relatively good stability and better efficiency as compared to 3D PSCs.