Abstract: The research on organic-inorganic hybrid perovskite solar cells has advanced rapidly. However, it holds poor stability, and it is a great challenge to improve its stability in this research field. The main factors that influence the device stability include moisture, oxygen, light and heat. Generally, the effective encapsulation technology is capable of preventing the devices from contacting moisture and oxygen. In-depth exploration still should be carried out to achieve the light stability of the cells. Herein, we studied the effect of light on the stability of MAPbI3 devices by means of electronic and optical characterization methods. According to the results of thermal admittance spectroscopy (TAS), capacitance-vol-tage (C-V) and X-ray photoelectron spectroscopy (XPS), we found increased deep level defect states induced by iodide vacancies and IPb antisite in aging perovskite films. These defect states can induce non-radiative recombination, which ultimately cause large energy loss and decrease in the open circuit voltage at low light intensity. In addition, we conducted comparative study of FA0.85MA0.15Pb (I0.85Br0.15)3 devices and MAPbI3 devices in light stability. The results of transient photovoltage (TPV) test indicated that the FA and Br ions could reduce the carriers recombination. This work provides a new understanding to improve the light stability of perovskite solar cells.
王磊, 吴天昊, 崔丹钰, 杨旭东. 甲胺(MA)基钙钛矿太阳电池光诱导缺陷机理及稳定性提高[J]. 材料导报, 2020, 34(2): 2001-2004.
WANG Lei, WU Tianhao, CUI Danyu, YANG Xudong. Light-induced Defect Mechanism and Stability Enhancement for Methylamine (MA) Based Perovskite Solar Cells. Materials Reports, 2020, 34(2): 2001-2004.
Lee M, Teuscher J, Miyasaka T, et al. Science, 2012, 338(6107), 643.2 Xing G C, Mathews N, Sun S Y, et al. Science, 2013, 342(6156), 344.3 Stranks S D, Eperon G E, Grancini G, et al. Science, 2013, 342(6156), 341.4 Mcmeekin D P, Sadoughi G, Rehman W, et al. Science, 2016, 351(6269), 151.5 Chen H, Ye F, Tang W T, et al. Nature, 2017, 550(7674), 92.6 Luo D Y, Yang W Q, Wang Z P, et al. Science, 2018, 360(6396), 1442.7 Mei A Y, Li X, Liu L F, et al. Science, 2014, 345(6194), 295.8 Yang J L, Siempelkamp B D, Liu D Y, et al. ACS Nano, 2015, 9(2), 1955.9 Yun J S, Kim J, Young T, et al. Advanced Functional Materials, 2018, 28(11), 1705363.10 Aristidou N, Sanchez-molina I, Chotchuangchutchaval T, et al. Angewandte Chemie International Edition, 2015, 54(28), 8208.11 O′mahony F T F, Lee Y H, Jellett C, et al. Journal of Materials Chemistry A, 2015, 3(14), 7219.12 Sheikh A D, Bera A, Hague M A, et al. Solar Energy Materials and Solar Cells, 2015, 137, 6.13 Leijtens T, Eperon G E, Pathak S, et al. Nature Communications, 2013, 4, 2885.14 Bella F, Griffini G, Correa-baena J P, et al. Science, 2016, 354(6309), 203.15 Yuan Y B, Chae J, Shao Y C, et al. Advanced Energy Materials, 2015, 5(15), 1500615.16 Kim G Y, Senocrate A, Yang T Y. Nature Materials, 2018, 17(5), 445.17 Bi E B, Chen H, Xie F X, et al. Nature Communications, 2017, 8, 7.18 Bush K A, Palmstrom A F, Yu Z J, et al. Nature Energy, 2017, 2(4), 17009.19 Chen W, Wu Y Z, Yue Y F, et al. Science, 2015, 350(6263), 944.20 Leijtens T, Eperon G E, Noel N K, et al. Advanced Energy Materials, 2015, 5(20), 1500963.21 Wojciechowski K, Leijtens T, Spirova S, et al. Journal of Physical Chemistry Letters, 2015, 6(12), 2399.22 Do Kim H, Ohkita H, Benten H, et al. Advanced Materials, 2016, 28(5), 917.23 Tress W, Yavari M, Domanski K, et al. Energy Environmental Science, 2018, 11(1), 151.24 Cai M, Ishida N, Li X, et al. Joule, 2018, 2(2), 296.25 Duan H S, Zhou H P, Chen Q, et al. Physical Chemistry Chemical Phy-sics, 2015, 17(1), 112.26 Huang J S, Yuan Y B, Shao Y C, et al. Nature Review Materials, 2017, 2(7),17042.27 Li Y Z, Xu X R, Wang C, et al. Journal of Physical Chemistry C, 2017, 121(7), 3904.28 Tang X F, Brandl M, May B, et al. Journal of Materials Chemistry, 2016, 4(41), 15896.29 Leyden M R, Lee M V, Raga S R, et al. Journal of Materials Chemistry, 2015, 3(31), 16097.30 Frost J M, Butler K T, Brivio F, et al. Nano Letters, 2014, 14(5), 2584.31 Noh J H, Im S H, Heo J H, et al. Nano Letters, 2013, 13(4), 1764.
渝公网安备50019002502923号 版权所有：《材料导报》编辑部
2020, Vol. 34 
