Patterned Perovskites for Optoelectronic Applications

Abstract

As a mature strategy for constructing microstructures, patterning technologies are widely used in the optoelectronic field to satisfy the requirements of functional and/or aesthetic purposes. With the emergence of organic–inorganic hybrid perovskites, applying patterning technologies to perovskites can further optimize the properties of perovskite‐based optoelectronic devices, thereby enhancing their competitiveness in commercialization. To date, a series of perovskite patterning methods and patterned devices have been reported consecutively, which exhibit potential value and application prospects in the fields of optoelectronics, light‐emitting devices, building of integrated photovoltaic systems, etc. Here, the recent progress in perovskite patterning technologies is systematically summarized, divided into two major categories: indirect patterning and direct patterning. In addition, the merits of the patterning methods and their applications in optoelectronics are discussed.

Self-Patterned CsPbBr3 Nanocrystals for High-Performance Optoelectronics

“…However, as perovskite adhesion to the wafer is poor, it is highly unstable under certain conditions, such as UV light and chemical solution exposure [33][34][35] . Owing to these shortcomings, it is very difficult to integrate them using traditional photolithography and photoresist technologies, thus hindering the ongoing miniaturization and alignment efforts 36 . The strategy adopted in this work addresses this issue effectively.…”

Advances in Alternating Current Electroluminescent Devices

“…Electroluminescent (EL) devices have been the research hotspots for decades because of their enormous market value in lighting sources and displays . In particular, tremendous efforts have been put into developing the cost‐effective fabrication approaches for eco‐friendly illumination units, such as organic light‐emitting diodes (OLEDs) and quantum dots based light‐emitting diodes (QLEDs) .…”

High-efficiency colorful perovskite solar cells using TiO2 nanobowl arrays as a structured electron transport layer

“…7b. With a J SC of 22.59 mA cm −2 , a V OC of 1.04 V, an FF of 72.0%, the PCE of the colorful PSC reaches 16.94%, which is larger than the efficiencies for all the colorful PSCs reported in the literature till now [7,8,[15][16][17][18][19][20][21][22][23][24][25]. Specifically, the colorful PSCs with a bifunctional polymer counter electrode displayed PEC values ranging from 12.8% to 15.1% (from red to blue) [8] while most of the reported colorful PSCs exhibited PEC values less than 13%.…”

“…As an alternative approach, utilization of nanostructures with engineered optical properties for color generation has attracted much more attention for fabricating colorful solar cells [13,14]. For example, colorful PSCs have been successfully fabricated using patterned perovskites films [15], such as microstructured arrays of perovskite islands [7], arrayed perovskite domains with a concentric ring photonic structure [16], and two-dimensional (2D) inverse-opal perovskite photonic films (PCE up to 12.2%) [17]. Moreover, a variety of patterned structures including dielectric mirrors [18,19], optical micro-cavities [20,21], photonic crystal (PC) scaffolds [22], plasmonic nanoresonators [23], and planar metasurfaces [24] have been employed to integrate with the photoactive perovskite layer to prepare colorful PSCs.…”