Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Rashba-Dresselhaus Effect in Inorganic/Organic Lead Iodide Perovskite
  Interfaces   Despite the imperative importance in solar-cell efficiency, the intriguing
phenomena at the interface between perovskite solar-cell and adjacent carrier
transfer layers are hardly uncovered. Here we show that PbI$_2$/AI-terminated
lead-iodide-perovskite (APbI$_3$; A=Cs$^+$/ methylammonium(MA)) interfaced with
the charge transport medium of graphene or TiO2 exhibits the sizable/robust
Rashba-Dresselhaus (RD) effect using density-functional-theory and ab initio
molecular dynamics (AIMD) simulations above cubic-phase temperature. At the
PbI$_2$-terminated graphene/CsPbI3(001) interface, ferroelectric distortion
towards graphene facilitates an inversion breaking field. At the MAI-terminated
TiO$_2$/MAPbI$_3$(001) interface, the enrooted alignment of MA$^+$ towards
TiO$_2$ by short-strong hydrogen-bonding and the concomitant PbI$_3$ distortion
preserve the RD interactions even above 330 K. The robust RD effect at the
interface even at high temperatures, unlike in bulk, changes the direct-type
band to the indirect to suppress recombination of electron and hole, thereby
letting these accumulated carriers overcome the potential barrier between
perovskite and charge transfer materials, which promotes the solar-cell
efficiency.

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The categories of this paper are: hep-lat
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The categories of this paper are: nucl-th
35
The categories of this paper are: mtrl-th
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The categories of this paper are: supr-con
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The categories of this paper are: hep-ex
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The categories of this paper are: stat
10
The categories of this paper are: q-bio
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The categories of this paper are: plasm-ph
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The categories of this paper are: funct-an
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The categories of this paper are: math-ph
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The categories of this paper are: alg-geom
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The categories of this paper are: acc-phys
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The categories of this paper are: math
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The categories of this paper are: adap-org
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The categories of this paper are: nucl-ex
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The categories of this paper are: quant-ph