Polar or nonpolar? That is not the question for perovskite solar cells

  title={Polar or nonpolar? That is not the question for perovskite solar cells},
  author={Boyuan Huang and Zhenghao Liu and Changwei Wu and Yuning Zhang and Jinjin Zhao and Xiao Wang and Jiangyu Li},
  journal={National Science Review},
Abstract Perovskite solar cells (PSC) are promising next generation photovoltaic technologies, and there is considerable interest in the role of possible polarization of organic-inorganic halide perovskites (OIHPs) in photovoltaic conversion. The polarity of OIHPs is still hotly debated, however. In this review, we examine recent literature on the polarity of OIHPs from both theoretical and experimental points of view, and argue that they can be both polar and nonpolar, depending on composition… 
9 Citations

Figures and Tables from this paper

Ferroelasticity Mediated Energy Conversion in Strained Perovskite Films

Progress on Emerging Ferroelectric Materials for Energy Harvesting, Storage and Conversion

Since the discovery of Rochelle salt a century ago, ferroelectric materials have been investigated extensively due to their robust responses to electric, mechanical, thermal, magnetic, and optical

Recent progress on advanced transmission electron microscopy characterization for halide perovskite semiconductors

Halide perovskites are strategically important in the field of energy materials. Along with the rapid development of the materials and related devices, there is an urgent need to understand the

Missed ferroelectricity in methylammonium lead iodide

Methylammonium lead iodide, as related organometal halide perovskites, emerged recently as a particularly attractive material for photovoltaic applications. The origin of its appealing properties is

Spatiotemporally Correlated Imaging of Interfacial Defects and Photocurrents in High Efficiency Triple-Cation Mixed-Halide Perovskites.

Triple-cation mixed-halide perovskites have attracted considerable attention due to their excellent photovoltaic properties and enhanced stability, though the power conversion efficiency (PCE) is

Atomic-scale imaging of CH3NH3PbI3 structure and its decomposition pathway

This work successfully image the atomic structure of perovskite in real space under ultra-low electron dose condition, and observes a two-step decomposition process, and finds that C-N bonds can be readily destroyed under irradiation, releasing NH3 and HI and leaving hydrocarbons.



Structural and electronic properties of hybrid perovskites for high-efficiency thin-film photovoltaics from first-principles

The performance of perovskite solar cells recently exceeded 15% solar-to-electricity conversion efficiency for small-area devices. The fundamental properties of the active absorber layers, hybrid

Halide perovskite materials for solar cells: a theoretical review

Halide perovskites have recently emerged as promising materials for low-cost, high-efficiency solar cells. The efficiency of perovskite-based solar cells has increased rapidly, from 3.8% in 2009 to

Planar heterojunction perovskite solar cells via vapor-assisted solution process.

A low-temperature vapor-assisted solution process is demonstrated to construct polycrystalline perovskite thin films with full surface coverage, small surface roughness, and grain size up to microscale, paving the way for high reproducibility of films and devices.

Atomistic Origins of High-Performance in Hybrid Halide Perovskite Solar Cells

The performance of organometallic perovskite solar cells has rapidly surpassed that of both conventional dye-sensitized and organic photovoltaics. High-power conversion efficiency can be realized in

Ferroelectric Properties of Perovskite Thin Films and Their Implications for Solar Energy Conversion

The authors show that MAPbI3 thin-films are indeed semiconducting ferroelectrics and exhibit spontaneous polarization upon transition from the cubic high-temperature phase to the tetragonal phase at room temperature.

Revealing the role of organic cations in hybrid halide perovskite CH3NH3PbI3

It is suggested that molecular rotations, with the consequent dynamical change of the band structure, might be at the origin of the slow carrier recombination and the superior conversion efficiency of CH3NH3PbI3.

Dielectric Response: Answer to Many Questions in the Methylammonium Lead Halide Solar Cell Absorbers

Due to the unprecedented rapid increase of their power conversion efficiency, hybrid organic–inorganic perovskites CH3NH3PbX3 (X = I, Br, Cl) can potentially revolutionize the world of solar cells.

Mechanism and Impact of Cation Polarization in Methylammonium Lead Iodide

Despite the intense research effort on metal halide perovskites, the fundamental correlation between the crystal structure and optoelectronic properties remains unclear. As many intriguing phenomena