Facile in situ synthesis of stable luminescent organic–inorganic lead halide perovskite nanoparticles in a polymer matrix

Abstract

This paper presents a simple in situ approach for controlled synthesis of organic–inorganic lead halide perovskite NPs in polymer matrix.

Perovskite Solar Cells: From the Laboratory to the Assembly Line

“…PSC architecture is quite simple in its standard configuration:aconductive glass (or plastic foil) supports an electron extraction layer (like TiO 2 or SnO 2 [13] ), on top of which the perovskite-active material is deposited.Ahole-transporting material (HTM) is coated above the perovskite layer,a nd gold backcontactsa re evaporated on the top of the cell. [14][15][16][17] Sunlight absorption leads to charge-generation, and both negative and positivec hargec arriers are transported through the perovskite to charges electivec ontacts.T he core of this device is the perovskitel ayer,b earing ag eneric structure ABX 3 ,i nw hich Ai sa monovalentc ation (like methylammonium CH 3 NH 3 + ,f ormamidinium CH 2 (NH 2 ) 2 + ,C s + ,R b + ), Bs tands for Pb II or Sn II and X for Io rB r. [18] The successo ft his materials is given by its outstanding optoelectronic properties,m erging high absorption coefficient and mobility,l ow exciton binding energy and long balanced carrier diffusion length; [19][20][21][22][23] moreover,t he device can also work in the inverted configuration. [24] Several review articles have been published on strategies to improve the performance of laboratory-scale PSCs.…”

“…The core of this device is the perovskite layer, bearing a generic structure ABX 3 , in which A is a monovalent cation (like methylammonium CH 3 NH 3 + , formamidinium CH 2 (NH 2 ) 2 + , Cs + , Rb + ), B stands for Pb II or Sn II and X for I or Br . The success of this materials is given by its outstanding optoelectronic properties, merging high absorption coefficient and mobility, low exciton binding energy and long balanced carrier diffusion length; moreover, the device can also work in the inverted configuration . Several review articles have been published on strategies to improve the performance of laboratory‐scale PSCs …”

Highly Efficient and Stable Inorganic Perovskite Quantum Dots by Embedding into a Polymer Matrix

“…Blending with polymer matrices has been developed in recent years to improve the stability of the perovskite QDs. Besides the enhanced stability, polymer matrices endow the perovskites with advantages in many aspects, such as water resistant ability, mechanical performance and enhanced luminescent properties ,,,. For example, recently, the perovskite film based on Polyvinylidene fluoride (PVDF) slight change even immersing them into water for 400 h .…”

CsPbX3/SiOx (X = Cl, Br, I) monoliths prepared via a novel sol–gel route starting from Cs4PbX6 nanocrystals

“…At the NC scale, these issues can be mitigated by encapsulating or blending the NCs with other non-toxic materials. [12][13][14][15][16][17][18][19][20][21][22][23][24][25][26] For example, the encapsulation of LHP NCs with metal/metalloid oxide (MO) shells (e.g., TiOx, SiOx) has already been shown to improve both moisture and thermal stability. 27,28 Moreover, the shelling suppresses undesirable phenomena such as merging of NCs or intra-NCs ion-exchange reactions, which lead to a change in their emission color.…”