The degradation process of CH3NH3PbI3 films under 15%, 50% and 90% relative humidity(RH)was analyzed.The degradation product of CH3NH3PbI3film in different humidity environments was found to be PbI2 according to XRD measurement.The intermediate product was also observed in the 90% RH environment, which is similar like(CH3NH3)4PbI6·2H2O.CH3NH3PbI3 film exhibits a faster degradation rates in high RH environment.During CH3NH3PbI3 film degradation process its photo induced carriers quantity also decreases with aging time.In high RH environment carriers lifetime of CH3NH3PbI3 film reduces monotonously with aging time.While in low RH environment carrier lifetime increases at first stage of degradation process, which means that low RH atmosphere can passivate defects in CH3NH3PbI3 thin film.
GAO Xiaohe
,
MA Xiaoyan
,
GU Yu
,
ZHAO Mingming
,
ZHANG Wei
,
DANG Wei
,
YUAN Xiaoxian
. On degradation process of CH3NH3PbI3 film in different humidity conditions[J]. Journal of Hebei University(Natural Science Edition), 2019
, 39(4)
: 353
-358
.
DOI: 10.3969/j.issn.1000-1565.2019.04.004
[1] 杨少鹏,陶俊雷,陈康,等.通过NMP溶剂工程制备高效平面结构钙钛矿太阳能电池[J].河北大学学报(自然科学版),2018,38(2):126-132.DOI:10.3969/j.issn.1000-1565.2018.02.003.
[2] IMJH,LEECR,LEEJW,et al.6.5% efficient perovskite quantum-dot-sensitized solar cell[J].Nanoscale,2011,3(10):4088.DOI:10.1039/c1nr10867k.
[3] GREENMA,HO-BAILLIEA, SNAITHHJ.The emergence of perovskite solar cells[J].Nature Photonics, 2014,8(7):506-514.DOI:10.1038/nphoton.2014.134.
[4] 党伟,白晶晶,王鹏,等.CH3NH3PbI3钙钛矿光电探测器的短脉冲光电响应[J].河北大学学报(自然科学版),2015,35(6):576-581.DOI:10.3969/j.issn.1000-1565.2015.06.004.
[5] KOJIMA A, TESHIMA K, SHIRAI Y, et al.Organometal halide perovskites as visible-light sensitizers for photovoltaic cells[J].Journal of the American Chemical Society, 2009, 131(17):6050-6051.DOI:10.1021/ja809598r.
[6] KIM H S, LEE C R, IM J H, et al.Lead iodide perovskite sensitized all-solid-state submicron thin film mesoscopic solar cell with efficiency exceeding 9%[J].Scientific Reports, 2012, 2:591.DOI:10.1038/srep00591.
[7] WOJCIECHOWSKI K, SALIBA M, LEIJTENS T, et al.Sub-150°C processed meso-superstructured perovskite solar cells with enhanced efficiency[J].Energy Environmental Science, 2014, 7(3):1142-1147.DOI:10.1039/c3ee43707h.
[8] ZHOU H P, CHEN Q, LI G, et al.Interface engineering of highly efficient perovskite solar cells[J].Science, 2014, 345(6196):542-546.DOI:10.1126/science.1254050.
[9] YANG W S, PARK B W, JUNG E H, et al.Iodide management in formamidinium-lead-halide-based perovskite layers for efficient solar cells[J].Science, 2017, 356(6345):1376-1379.DOI:10.1126/science.aan2301.
[10] CHRISTIANS J A, MIRANDA HERRERA P A, KAMAT P V.Transformation of the excited state and photovoltaic efficiency of CH3NH3PbI3 perovskite upon controlled exposure to humidified air[J].Journal of the American Chemical Society, 2015, 137(4):1530-1538.DOI:10.1021/ja511132a.
[11] NIU G D, LI W Z, MENG F Q, et al.Study on the stability of CH3NH3PbI3films and the effect of post-modification by aluminum oxide in all-solid-state hybrid solar cells[J].Journal of Materials Chemistry A, 2014, 2(3):705-710.DOI:10.1039/c3ta13606j.
[12] WANG B H, CHEN T.Exceptionally stable CH3NH3PbI3 films in moderate humid environmental condition[J].Advanced Science, 2016, 3(2):1500262.DOI:10.1002/advs.201500262.
[13] EPERON G E, HABISREUTINGER S N, LEIJTENS T, et al.The importance of moisture in hybrid lead halide perovskite thin film fabrication[J].ACS Nano, 2015, 9(9):9380-9393.DOI:10.1021/acsnano.5b03626.
[14] PUTRI R M, FREDY J W, CORNELISSEN J J L M, et al.Labelling bacterial nanocages with photo-switchable fluorophores[J].Chem Phys Chem, 2016, 17:1-5.DOI:10.1002/cphc.201600013.
[15] JEONG B, CHO S M, CHO S H, et al.Humidity controlled crystallization of thin CH3NH3PbI3films for high performance perovskite solar cell[J].Physica Status Solidi-Rapid Research Letters, 2016, 10(5):381-387.DOI:10.1002/pssr.201600004.
[16] BRAUN J V, BRAUN J D.A simplified method of preparing solutions of glycerol and water for humidity control: A technical note[J].Corrosion, 1958, 14(3):17-18.DOI:10.5006/0010-9312-14.3.17.
[17] PIRIS J, KOPIDAKIS N, OLSON D, et al.The locus of free charge-carrier generation in solution-cast Zn1-xMgxO/poly(3-hexylthiophene)bilayers for photovoltaic applications[J].Advanced Functional Materials, 2007, 17(18):3849-3857.DOI:10.1002/adfm.200700305.
[18] SAVENIJE T J, HAAS M P, WARMAN J M, et al.The yield and mobility of charge carriers in smooth and nanoporous TiO2 films[J].Zeitschriftfür Physikalische Chemie, 1999, 212:201-206.doi:10.1524/zpch.1999.212.Part_2.201.
[19] 刘旭,白晶晶,张荣香,等.光浴对CH3NH3PbI3薄膜光致发光量子效率的影响[J].发光学报,2017,38(12):1629-1635.DOI:10.3788/fgxb20173812.1629.
[20] ALBERTI A, DERETZIS I, PELLEGRINO G, et al.Similar structural dynamics for the degradation of CH3NH3PbI3 in air and in vacuum[J].ChemPhysChem, 2015, 16(14):3064-3071.DOI:10.1002/cphc.201500374.
[21] ZHAO Y X, ZHU K.Optical bleaching of perovskite(CH3NH3)PbI3 through room-temperature phase transformation induced by ammonia[J].Chemical Communications, 2014, 50(13):1605.DOI:10.1039/c3cc48522f.
[22] YANG J L, SIEMPELKAMP B D, LIU D Y, et al.Investigation of CH3NH3PbI3 degradation rates and mechanisms in controlled humidity environments using in situ techniques[J].ACS Nano, 2015, 9(2):1955-1963.DOI:10.1021/nn506864.
[23] LEGUY A M A, HU Y H, CAMPOY-QUILES M, et al.Reversible hydration of CH3NH3PbI3 in films, single crystals, and solar cells[J].Chemistry of Materials, 2015, 27(9):3397-3407.DOI:10.1021/acs.chemmater.5b00660.
