Research Progress of High-Sensitivity Perovskite Photodetectors: A Review of Photodetectors: Noise, Structure, and Materials

Abstract

In recent years, perovskite materials have been widely used in optoelectronic components due to a series of advantages such as a high light absorption coefficient, high carrier mobility, long carrier diffusion length, shallow defect level, and high crystallinity. The photodetector is an important photoelectric device that can convert light radiation signals into electrical signals, so it has significant applications and scientific research value in military, civil, and other fields. Semiconductor materials are an essential part of photodetectors. So far, many semiconductor materials have been used in photodetectors, including silicon, carbon nanotubes, III−V compounds, and quantum dots, and remarkable progress has been made in improving the light detection performance and device structure design. However, photodetectors based on these materials usually require expensive materials, rigorous processes, and complex manufacturing conditions, which hinder their commercial application. Optoelectronic devices based on perovskite materials have the advantages of a simple fabrication process, low cost, and high performance, making them widely considered in optoelectronic applications. This review focuses on the preparation and photoelectric performance of the perovskite photodetector and the effect of noise on the performance of the perovskite detector and how to reduce the detector's noise to increase the detection rate. In this review, we mainly discuss the following four aspects of work. First, we discuss the various noises of perovskite photodetectors. Then, we explore ways to reduce the noise of perovskite detectors with different structures (photoconductor, photodiode, and phototransistor). We explore corresponding improvement methods for different device structure detectors to reduce noise and improve the detection performance. Next, we discuss the different synthesis methods of all-inorganic perovskites, including solution processing synthesis, vapor-assisted solution synthesis, and chemical vapor deposition. Finally, current challenges of perovskite photodetectors (toxicity, stability, flexibility, and self-powered) are summarized and prospected.

Preserving Bond Ionicity under Illumination to Achieve Photostable Halide Perovskites

“…Lead halide perovskite (LHP) materials were discovered as solar cells in 2009 by Kojima et al, with a power conversion efficiency (PCE) of 3.8%. Nowadays, a certified PCE of 25.6% has been achieved, and it is even boosted to 25.8% with quantum dot–SnO 2 electron-transport layers. , Over more than a decade, the range of applications broadened with the development of light-emitting diodes, lasers, photodetectors, γ-detectors, and field effect transistors . At the same time, a main obstacle for massive production of LHP devices is their structural instability under exposure to air, humidity, temperature, and light .…”

Hot-Injection Synthesis Protocol for Green-Emitting Cesium Lead Bromide Perovskite Nanocrystals

“…Lead halide perovskite nanocrystals (NCs) with the general formula of APbX 3 (A = CH 3 NH 3 + , CH­(NH 2 ) 2 + , Cs + ; X = I – , Br – , Cl – ) have emerged as popular semiconductor materials with plenty of potential applications in photovoltaics, − light-emitting devices, − photodetectors, , and lasers. , Their outstanding properties such as defect tolerance, , broad band gap tunability, , near-unity photoluminescence quantum yield (PL QY), , and narrow PL full width at half-maxima make them very attractive for optoelectronic applications. Commonly to any development of reliable syntheses of semiconductor NCs, there have been continuous efforts to enhance the reproducibility, monodispersity, and PL QY of perovskite materials.…”

Magnetic and Electric Field Dependent Charge Transfer in Perovskite/Graphene Field Effect Transistors

“…[ 5–7 ] In particular, inorganic halide perovskite nanocrystals (PNCs) have attracted significant attention owing to their unique and outstanding optical properties such as high quantum yield (QY), strong absorption, and widely tunable band gap energy [ 8–10 ] accompanied by inexpensive solution processing techniques. [ 11–13 ] These PNCs have been successfully used in photon detectors operational in the visible wavelength range with photoresponsivity, R > 10 5 A W −1 , [ 14,15 ] and could offer further opportunities for UV applications. [ 16,17 ]…”