Abstract
We have obtained a series of low-dimensional hybrid perovskitoids (often referred to as perovskites) based on lead bromide. As organic cations, the derivatives of polyaromatic and conjugated molecules, such as anthracene, pyrene and (E)-stilbene, were chosen to form charge-transfer complexes with various organic acceptors for use as highly tunable components of hybrid perovskite solar cells. X-ray diffraction analysis showed these crystalline materials to be new 1D- and pseudo-layered 0D-perovskitoids with lead bromide octahedra featuring different sharing modes, such as in unusual mini-rods of four face- and edge-shared octahedra. Thanks to the low dimensionality, they can be of use in another type of optoelectronic device, photodetectors.
Highlights
IntroductionSolar cells made with hybrid perovskite semiconductors [1] are believed to have a potential to revolutionize the field of renewable energy sources
The organic donors (anthracene, pyrene and (E)-stilbene) to form a charge-transfer complex with TCNE were functionalized by a methanamine group to function as organic cations in the hybrid perovskites based on lead(II) bromide
In our search for low-dimensional hybrid perovskites with organic charge-transfer complexes to tune their optoelectronic properties for use in solar cells [21,22,23,24,33], new pseudo-layered 0D- and 1D-hybrid perovskitoids [35] were obtained from lead bromide
Summary
Solar cells made with hybrid perovskite semiconductors [1] are believed to have a potential to revolutionize the field of renewable energy sources. These crystalline materials of the general formula AMX3 feature a three-dimensional periodic array of corner-sharing. Owing to an ability to produce high-quality single crystals and films with tunable optoelectronic characteristics [2], the hybrid perovskites are superior to crystalline silicon, a popular component of solar cells. They, suffer from low stability [3] and soon degrade when exposed to oxygen, moisture, heat and even sunlight. As a solution [4,5], low-dimensional hybrid perovskites [3] were proposed in which
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