1 Key Laboratory of Flexible Electronics (KLOFE) & Institution of Advanced Materials (IAM), Jiangsu National Synergetic Innovation Center for Advanced Materials (SICAM), Nanjing Tech University (Nanjing Tech), Nanjing 211816; 2 Shaanxi Institute of Flexible Electronics (SIFE), Northwestern Polytechnical University (NPU), Xi’an 710072; 3 Key Laboratory for Organic Electronics & Information Displays (KLOEID), and Institute of Advanced Materials (IAM), Nanjing University of Posts and Telecommunications, Nanjing 210023;
Since the emergence of organic-inorganic hybrid perovskite materials as light harvesters, the perovskite solar cells have attained a considerable efficiency improvement due to notable achievements in optimizing the fabrication process and device structure, while nevertheless been suffering increasingly serious challenges, especially instability. Layered (low-dimensional) perovskite materials are constructed based on a periodical (or quasi-periodical, or hybridized) structure which is composed of alternate layers of organic amines and metal halide perovskite crystals. The layered structure approximates to a two-dimensional structure whilst the number (n) of planes, which consist of the pyramids’ squares of the perovskite octahedrons, within one separated perovskite layer approaches 1. For photovoltaic application, these low-dimensional perovskite structures have two advantages compared to their three-dimensional counterparts: I. remarkably enhanced moisture resistance and thermal stability; II. tunable optical and electrical characteristics by varying n and selecting different organic amines.
On the other hand, poor carrier mobility (a consequence of the inhibition of out-of-plane charge transport by the organic amine cations) and wide band gap contribute to a far lower efficiency of low-dimensional perovskite solar cell than three-dimensional perovskite device. This urges intensive research endeavors to seek favorable organic amines and optimize perovskite film fabrication process, aiming at boosting photovoltaic efficiency while exploiting layered perovskite’s stability. And in the past three years, impressive strides have been made in promoting the low-dimensional perovskite solar cells, with a giant leap in the reported power conversion efficiency (PCE) from 4.37% to 13.7%.
Phenethylamine (PEA), n-butylamine (n-BA), isobutylamine (iso-BA), polyethylenimine (PEI), etc. have been found to be satisfactory as the hydrophobic amine interlayers for relatively-high-efficiency layered perovskite solar cells. PEA is the first to be involved in the attempts, and the n-BA-intercalated perovskite hold the currently highest efficiency of this new type of photovoltaic devices. PEI intercalation appears to result in narrower band gap and higher moisture resistance, but also leads to a larger inhibition to the carrier transport. Although one-step spin coating provides a facile route to obtain layered perovskite films, this method will cause the horizontal growth (i.e. interlayers parallel to substrate) of the layered structure and in consequence, an extremely low cell efficiency. Works in the past two years have established a new avenue to overcome the low-efficiency bottleneck, by introducing various techniques into the spin coating process, e.g. hot casting, immersion (in short-chain amines), antisolvent dripping, all of which have successfully achieved the preferential out-of-plane alignment of the inorganic perovskite layers. Besides, researchers also have demonstrated that the 2D-3D hybrid perovskite structures, which can be constructed on the basis of 3D perovskite with the presence of organic amine additives, can gain improvements in terms of both efficiency and stability.
This review offers a retrospection of the research efforts with respect to the layered (low-dimensional) perovskite photovoltaic devices, and provides elaborate descriptions about the structure of low-dimensional perovskite, the selection of the intercalating organic amines, and the film fabrication process. We then pay attention to the problems confronting the current state-of-the-art low-dimensional perovskite solar cells. We have confidence that the low-dimensional perovskite solar cells have a bright future in the development and innovation of stable and environmental-friendly photovoltaic devices.
Lee M M, Teuscher J, Miyasaka T , et al. Efficient hybrid solar cells based on meso-superstructured organometal halide perovskites[J]. Science, 2012,338(6107):643.
[2]
Wehrenfennig C, Eperon G E, Johnston M B , et al. High charge carrier mobilities and lifetimes in organo lead trihalide perovskites[J]. Advanced Materials, 2013,26(10):1584.
[3]
Innocenzo V, Grancini G , Alcocer M J P, et al. Excitons versus free charges in organo-lead tri-halide perovskites[J]. Nature Communications, 2014,5(4):3586.
[4]
You J, Hong Z, Yang Y M , et al. Low-Temperature solution-processed perovskite solar cells with high efficiency and flexibility[J]. ACS Nano, 2014,8(2):1674.
[5]
Liu M, Johnston M B, Snaith H J . Efficient planar heterojunction perovskite solar cells by vapour deposition[J]. Nature, 2013,501(7467):395.
[6]
Xiao M, Huang F, Huang W , et al. A fast deposition-crystallization procedure for highly efficient lead iodide perovskite thin-film solar cells[J]. Angewandte Chemie International Edition, 2014,53(37):9898.
[7]
Liang P, Liao C, Chueh C , et al. Additive enhanced crystallization of solution-processed perovskite for highly efficient planar-heterojunction solar cells[J]. Advanced Materials, 2014,26(22):3748.
[8]
Xiao Z, Bi C, Shao Y , et al. Efficient, high yield perovskite photovoltaic devices grown by interdiffusion of solution-processed precursor stacking layers[J]. Energy & Environment Science, 2014,7(8):2619.
[9]
Burschka J, Pellet N, Moon S , et al. Sequential deposition as a route to high-performance perovskite-sensitized solar cells[J]. Nature, 2013,499(7458):316.
[10]
Zhao Y, Zhu K . Organic-inorganic hybrid lead halide perovskites for optoelectronic and electronic applications[J]. Chemical Society Reviews, 2016,45(3):655.
[11]
KojimaA, 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.
[12]
YangW S, Park B W, Jung E H , et al. Iodide management in formamidinium-lead-halide-based perovskite layers for efficient solar cells[J]. Science, 2017,356:1376.
[13]
Niu G, Li W, Meng F , et al. Study on the stability of CH3NH3PbI3 films 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.
[14]
Wang Z, Shi Z, Li T , et al. Stability of perovskite solar cells: A prospective on the substitution of the A Cation and X anion[J]. Angewandte Chemie International Edition, 2017,129(5):1210.
[15]
EperonG E, Stranks S D, Menelaou C , et al. Formamidinium lead trihalide: A broadly tunable perovskite for efficient planar heterojunction solar cells[J]. Energy & Environmental Science, 2014,7(3):982.
[16]
ChenY, Chen T, Dai L . Layer-by-layer growth of CH3NH3PbI3-x-Clx for highly efficient planar heterojunction perovskite solar cells[J]. Advanced Materials, 2015,27(6):1053.
[17]
EperonG E, Beck C E, Snaith H J . Cation exchange for thin film lead iodide perovskite interconversion[J]. Materials Horizons, 2015,3(1):63.
[18]
QuanL N, Yuan M, Comin R , et al. Ligand-stabilized reduced-dimensionality perovskites[J]. Journal of the American Chemical Society, 2016,138(8):2649.
[19]
PengW, Yin J, Ho K , et al. Ultralow self-doping in two-dimensional hybrid perovskite single crystals[J]. Nano Letters, 2017,17(8):4759.
[20]
Lin Y, Bai Y, Fang Y , et al. Suppressed ion migration in low-dimensional perovskites[J]. ACS Energy Letters, 2017(2):1571.
[21]
GreenM A, Ho-Baillie A, Snaith H J . The emergence of perovskite solar cells[J]. Nature Photonics, 2014,8(7):507.
[22]
MitziD B . Templating and structural engineering in organic-inorganic perovskites[J]. Journal of the Chemical Society, Dalton Transactions, 2001,1(1):1.
[23]
ChengZ, Lin J . Layered organic-inorganic hybrid perovskites:Structure, optical properties, film preparation, patterning and templating engineering[J]. CrystEngComm, 2010,12(10):2646.
[24]
WangS, Mitzi D B, Feild C A , et al. Synjournal and characterization of [NH2C(I)=NH2]3MI5 (M = Sn, Pb): Stereochemical activity in divalent tin and lead halides containing single (110) perovskite sheets[J]. Journal of the American Chemical Society, 1995,117:5297.
[25]
ZaleskiJ, Pietraszko A . Structure at 200 and 298 K and X-ray investigations of the phase transition at 242 K of[NH2(CH3)2]3-Sb2Cl9(DMACA)[J]. Acta Crystallographica Section B: Structural Science, Crystal Engineering and Materials, 1996,52(2):287.
[26]
SmithI C, Hoke E T, Solisibarra D , et al. A layered hybrid perovskite solar-cell absorber with enhanced moisture stability[J]. Angewandte Chemie International Edition, 2014,53(42):11232.
[27]
ZhangX, Ren X, Liu B , et al. Stable high efficiency two-dimensional perovskite solar cells via cesium doping[J]. Energy & Environmental Science, 2017,10:2095.
[28]
KammingaM E, Fang H, Filip M R , et al. Confinement effects in low-dimensional lead iodide perovskite hybrids[J]. Chemistry of Materials, 2016,28(13):4554.
[29]
MuljarovE, Tikhodeev S, Gippius N , et al. Excitons in self-organized semiconductor/insulator superlattices: PbI-based perovskite compounds[J]. Physical Review B, 1995,51(20):14370.
[30]
CohenB, Wierzbowska M, Etgar L . High efficiency and high open circuit voltage in quasi 2D perovskite based solar cells[J]. Advanced Functional Materials, 2017,27(5):1604733.
[31]
ProtesescuL, Yakunin S, Bodnarchuk M I , et al. Nanocrystals of cesium lead halide perovskites (CsPbX3, X = Cl, Br, and I): Novel optoelectronic materials showing bright emission with wide color gamut[J]. Nano Letters, 2015,15(6):3692.
[32]
CaoD H, Stoumpos C C, Farha O K , et al. 2D Homologous perovskites as light-absorbing materials for solar cell applications[J]. Journal of the American Chemical Society, 2015,137(24):7843.
[33]
ChenY, Sun Y, Peng J , et al. Tailoring organic cation of 2D air-stable organometal halide perovskites for highly efficient planar solar cells[J]. Advanced Energy Materials, 2017,7(18):1700162.
[34]
YaoK, Wang X, Xu Y , et al. Multilayered perovskite materials based on polymeric-ammonium cations for stable large-area solar cell[J]. Chemistry of Materials, 2016,28(9):3131.
[35]
StoumposC C, Soe C M M, Tsai H , et al. High Members of the 2D Ruddlesden-Popper halide perovskites: Synjournal, optical properties, and solar cells of (CH3(CH2)3NH3)2(CH3NH3)4Pb5I16[J]. Chem, 2017,2(3):427.
[36]
TsaiH, Nie W, Blancon J C , et al. High-efficiency two-dimensional Ruddlesden-Popper perovskite solar cells[J]. Nature, 2016,536(7616):312.
[37]
KohT M, Shanmugam V, Schlipf J , et al. Nanostructuring mixed-dimensional perovskites: A route toward tunable, efficient photovoltaics[J]. Advanced Materials, 2016,28(19):3653.
[38]
LiaoY, Liu H, Zhou W , et al. Highly-oriented low-dimensional tin halide perovskites with enhanced stability and photovoltaic performance[J]. Journal of the American Chemical Society, 2017,139(19):6693.
[39]
BaiY, Xiao S, Hu C , et al. Dimensional engineering of a Graded 3D-2D halide perovskite interface enables ultrahigh Voc enhanced stability in the p-i-n photovoltaics[J]. Advanced Energy Materials, 2017,7(20):1701038.
[40]
LiN, Zhu Z, Chueh C C , et al. Mixed Cation FAxPEA1-xPbI3 with enhanced phase and ambient stability toward high-performance perovskite solar cells[J]. Advanced Energy Materials, 2017,7(1):1601307.
[41]
XuF, Zhang T, Li G , et al. Mixed cation hybrid lead halide perovskites with enhanced performance and stability[J]. Journal of Materials Chemistry A, 2017,5(23):11450.
[42]
MaC, Leng C, Ji Y , et al. 2D/3D perovskite hybrids as moisture-tolerant and efficient light absorbers for solar cells[J]. Nanoscale, 2016,8(43):18309.
[43]
MaoL, Tsai H, Nie W , et al. Role of organic counterion in lead-and tin-based two-dimensional semiconducting iodide perovskites and application in planar solar cells[J]. Chemistry of Materials, 2016,28(21):7781.
[44]
WangF, Geng W, Zhou Y , et al. Phenylalkylamine passivation of organolead halide perovskites enabling high-efficiency and air-stable photovoltaic cells[J]. Advanced Materials, 2016,28(45):9986.
[45]
ZhangT, Xie L, Chen L , et al. In situ fabrication of highly luminescent bifunctional amino acid crosslinked 2D/3D NH3C4H9-COO(CH3NH3PbBr3)n perovskite films[J]. Advanced Functional Materials, 2017,27(1):1603568.
[46]
LiX, Ibrahim Dar M, Yi C , et al. Improved performance and stability of perovskite solar cells by crystal crosslinking with alkylphosphonic acid ω-ammonium chlorides[J]. Nature Chemistry, 2015,7(9):703.
[47]
BiD, Gao P, Scopelliti R , et al. High-performance perovskite solar cells with enhanced environmental stability based on amphiphile-modified CH3NH3PbI3[J]. Advanced Materials, 2016,28(15):2910.
[48]
ZhaoT, Chueh C C, Chen Q , et al. Defect passivation of organic-inorganic hybrid perovskites by diammonium iodide toward high-performance photovoltaic devices[J]. ACS Energy Letters, 2016,1(4):757.
[49]
YanL, Niu H J, Duong G V , et al. Cation ordering within the perovskite block of a six-layer Ruddlesden-Popper oxide from layer-by-layer growth-artificial interfaces in complex unit cells[J]. Chemical Science, 2011,2(2):261.
[50]
ShiZ, Guo J, Chen Y , et al. Lead-free organic-inorganic hybrid perovskites for photovoltaic applications: Recent advances and perspectives[J]. Advanced Materials, 2017,29(16):1605005.
[51]
CaoD H, Stoumpos C C, Yokoyama T , et al. Thin films and solar cells based on semiconducting two-dimensional Ruddlesden-Popper (CH3(CH2)3NH3)2(CH3NH3)n-1SnnI3n+1 perovskites[J]. ACS Energy Letters, 2017,2(5):982.
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2018, Vol. 32 
