Efficient inorganic–organic hybrid heterojunction solar cells containing perovskite compound and polymeric hole conductors

Heo, Jin Hyuck; Im, Sang Hyuk; Noh, Jun Hong; Mandal, Tarak Nath; Lim, Choong‐Sun; Chang, Jeong Ah; Lee, Yong Hui; Kim, Hi-Jung; Саркар, Арпита; Nazeeruddin, Md. K.; Grätzel, Michaël; Seok, Sang Il

doi:10.1038/nphoton.2013.80

Cited by 2,519 publications

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“…P erovskite solar cells have rapidly become an emerging photovoltaic technology, which has evoked widespread scientific and industrial interest [1][2][3][4][5][6][7][8][9] . The light-absorbing material is an organic-inorganic trihalide perovskite with an ABX 3 structure (where A is an organic cation, B a divalent metal ion and X a halide Cl, Br or I or any mixture thereof).…”

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confidence: 99%

“…Typically, this is methylammonium lead triiodide CH 3 NH 3 PbI 3 or mixed halide variants CH 3 NH 3 PbI 3 À x Cl x and CH 3 NH 3 Pbl 3 À x Br x , which can be synthesized simply from cheap materials, in contrast to traditional semiconductors. Thin films can also be fabricated by various deposition procedures including simple one-step solution coating [1][2][3] , sequential dip coating 4 , vapour phase deposition 5 or combinations thereof 10 , similarly versatile to organic semiconductors. In contrast to the latter though, perovskites exhibit excellent crystallinity, ambipolar transport 3 and large diffusion length for both electrons and holes 11,12 .…”

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Ultrasmooth organic–inorganic perovskite thin-film formation and crystallization for efficient planar heterojunction solar cells

et al. 2015

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To date, there have been a plethora of reports on different means to fabricate organicinorganic metal halide perovskite thin films; however, the inorganic starting materials have been limited to halide-based anions. Here we study the role of the anions in the perovskite solution and their influence upon perovskite crystal growth, film formation and device performance. We find that by using a non-halide lead source (lead acetate) instead of lead chloride or iodide, the perovskite crystal growth is much faster, which allows us to obtain ultrasmooth and almost pinhole-free perovskite films by a simple one-step solution coating with only a few minutes annealing. This synthesis leads to improved device performance in planar heterojunction architectures and answers a critical question as to the role of the anion and excess organic component during crystallization. Our work paves the way to tune the crystal growth kinetics by simple chemistry.

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Ultrasmooth organic–inorganic perovskite thin-film formation and crystallization for efficient planar heterojunction solar cells

et al. 2015

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“…Recently the organic-inorganic hybrid compound CH 3 NH 3 PbI 3 (hereafter MAPbI 3 ) has emerged as the central component of highly efficient solar cells [1][2][3][4] . MAPbI 3 is deposited in a dye sensitized solar cell configuration by spin coating on TiO 2 nanoparticles and using a solid state redox mediator its light conversion efficiency (η) reaches 16%, an unprecedented value for such a device.…”

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Ultra-Low Thermal Conductivity in Organic–Inorganic Hybrid Perovskite CH₃NH₃PbI₃

Pisoni

Jaćimović

Barišić

et al. 2014

J. Phys. Chem. Lett.

460

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We report on the temperature dependence of thermal conductivity of single crystalline and polycrystalline organometallic perovskite CH3NH3PbI3. The comparable absolute values and temperature dependence of the two samples’ morphologies indicate the minor role of the grain boundaries on the heat transport. Theoretical modeling demonstrates the importance of the resonant scattering in both specimens. The interaction between phonon waves and rotational degrees of freedom of CH3NH3 + sublattice emerges as the dominant mechanism for attenuation of heat transport and for ultralow thermal conductivity of 0.5 W/(Km) at room temperature.

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“…Later, it was observed that 'meso-superstructured solar cells' 12 result in even higher efficiency 13 . Recent experimental work [14][15][16] has further improved the efficiency reaching now 17.9% (refs 7,17).…”

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Tunable ferroelectric polarization and its interplay with spin–orbit coupling in tin iodide perovskites

et al. 2014

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Ferroelectricity is a potentially crucial issue in halide perovskites, breakthrough materials in photovoltaic research. Using density functional theory simulations and symmetry analysis, we show that the lead-free perovskite iodide (FA)SnI 3 , containing the planar formamidinium cation FA, (NH 2 CHNH 2 ) þ , is ferroelectric. In fact, the perpendicular arrangement of FA planes, leading to a 'weak' polarization, is energetically more stable than parallel arrangements of FA planes, being either antiferroelectric or 'strong' ferroelectric. Moreover, we show that the 'weak' and 'strong' ferroelectric states with the polar axis along different crystallographic directions are energetically competing. Therefore, at least at low temperatures, an electric field could stabilize different states with the polarization rotated by p/4, resulting in a highly tunable ferroelectricity appealing for multistate logic. Intriguingly, the relatively strong spin-orbit coupling in noncentrosymmetric (FA)SnI 3 gives rise to a co-existence of Rashba and Dresselhaus effects and to a spin texture that can be induced, tuned and switched by an electric field controlling the ferroelectric state.

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Efficient inorganic–organic hybrid heterojunction solar cells containing perovskite compound and polymeric hole conductors

Cited by 2,519 publications

References 27 publications

Ultrasmooth organic–inorganic perovskite thin-film formation and crystallization for efficient planar heterojunction solar cells

Ultrasmooth organic–inorganic perovskite thin-film formation and crystallization for efficient planar heterojunction solar cells

Ultra-Low Thermal Conductivity in Organic–Inorganic Hybrid Perovskite CH₃NH₃PbI₃

Tunable ferroelectric polarization and its interplay with spin–orbit coupling in tin iodide perovskites

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Efficient inorganic–organic hybrid heterojunction solar cells containing perovskite compound and polymeric hole conductors

Cited by 2,519 publications

References 27 publications

Ultrasmooth organic–inorganic perovskite thin-film formation and crystallization for efficient planar heterojunction solar cells

Ultrasmooth organic–inorganic perovskite thin-film formation and crystallization for efficient planar heterojunction solar cells

Ultra-Low Thermal Conductivity in Organic–Inorganic Hybrid Perovskite CH3NH3PbI3

Tunable ferroelectric polarization and its interplay with spin–orbit coupling in tin iodide perovskites

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Ultra-Low Thermal Conductivity in Organic–Inorganic Hybrid Perovskite CH₃NH₃PbI₃