March 31, 2021 Journal article Open Access

Balaji Dhanabalan; Balaji Dhanabalan; Lea Pasquale; Milena P. Arciniegas; Liberato Manna; Renuka Devi Pothuraju; Renuka Devi Pothuraju; Sergio Marras; Roman Krahne

Citation Style Language JSON Export

{
  "DOI": "10.1002/adpr.202100005", 
  "abstract": "The structural flexibility of 2D\u2010layered halide perovskites provides unprecedented opportunities for tuning their optical properties. For example, lattice distortions facilitate white emission that stems from self\u2010trapped excitons or defects, and organic cations and halides determine structural stability and emission range. Herein, the optical properties of a set of single\u2010layer thiophene\u2010based 2D lead bromide platelets are investigated. Blue\u2010 and white\u2010emitting materials based on the choice of thiophene cation and HBr concentration in the synthesis and reversible white to blue color switching by sequential washing and precursor exposure of the fabricated samples are obtained. The photophysical and structural studies indicate that the key to color switching is the formation and suppression of self\u2010trapped excitons by the supply and removal of cations and halides in acetone. The range of emission color from these materials is extended to red by efficient Mn doping that leads to an additional strong emission peak centered at 620\u2009nm. The findings stimulate the development of color\u2010tunable and switchable light emitters based on a single material.", 
  "author": [
    {
      "family": "Balaji Dhanabalan"
    }, 
    {
      "family": "Balaji Dhanabalan"
    }, 
    {
      "family": "Lea Pasquale"
    }, 
    {
      "family": "Milena P. Arciniegas"
    }, 
    {
      "family": "Liberato Manna"
    }, 
    {
      "family": "Renuka Devi Pothuraju"
    }, 
    {
      "family": "Renuka Devi Pothuraju"
    }, 
    {
      "family": "Sergio Marras"
    }, 
    {
      "family": "Roman Krahne"
    }
  ], 
  "id": "77437", 
  "issued": {
    "date-parts": [
      [
        2021, 
        3, 
        31
      ]
    ]
  }, 
  "language": "eng", 
  "note": "", 
  "title": "Reversible Emission Tunability from 2D\u2010Layered Perovskites with Conjugated Organic Cations", 
  "type": "article-journal"
}