Drawing from both experimental data and simulation, we highlight best practices for fitting time-resolved photoluminescence (TRPL) decays of halide perovskite semiconductors, which are now widely studied for applications in photovoltaics and light-emitting diodes (LEDs). First, at low excitation intensities, high-quality perovskites often show pseudo-first-order kinetics, consistent with classic minority carrier lifetimes. Second, multiexponential decays, frequently observed at low excitation intensities, often have significant contributions from spatial heterogeneity. We recommend fitting such decays with stretched exponentials, where the stretching factor (β) can be used to characterize the heterogeneity of the local lifetime distribution. Third, PL decay kinetics can depend on the excitation wavelength. We discuss how penetration depth, carrier diffusion, and surface recombination affect measurements and make recommendations for choosing experimental parameters suited to the question at hand. Accounting for these factors will provide a more reliable and physical interpretation of carrier recombination and better understanding of nonradiative losses in perovskite semiconductors.

Margherita Taddei

Sarthak Jariwala

Robert J. E. Westbrook

Shaun Gallagher

Aaron C. Weaver

Justin Pothoof

Mark E. Ziffer

Henry J. Snaith

David S. Ginger

ACS Energy Letters

ACS ENERGY LETTERS 发表的论文报告了能源研究各个方面的新科学进展。下面列出了与能量捕获、转换和存储相关的主题。能源材料、光捕获组件能量转换过程（催化和光催化）太阳能燃料（制氢、减少二氧化碳）无机、有机和混合光伏光合作用和生物燃料燃料电池、蓄电池和超级电容器等离子、OLED 和光显示系统串联器件、压电和热电过程

ACS Energy Letters publishes papers reporting new scientific advancements in various aspects of energy research. The topics covered include energy capture, conversion, and storage, such as energy materials, light-harvesting components, energy conversion processes (catalysis and photocatalysis), solar fuels (hydrogen production, carbon dioxide reduction), inorganic, organic, and hybrid photovoltaics, photosynthesis and biofuels, fuel cells, batteries, and supercapacitors, plasma, OLEDs and optical display systems, tandem devices, piezoelectric and thermoelectric processes.

《ACS Energy Letters》发表关于能源研究各个方面的新科学进展的论文。主要涵盖以下主题：能量捕获、转换和存储，包括能源材料、光捕获组件、能量转换过程（催化和光催化）、太阳能燃料（制氢、减少二氧化碳）、无机、有机和混合光伏、光合作用和生物燃料、燃料电池、蓄电池和超级电容器、等离子体、OLED和光显示系统、串联器件、压电和热电过程等。

Category	Quartile
材料科学	1
材料科学, 物理化学	1
材料科学, 电化学	1
材料科学, 能源与燃料	1
材料科学, 材料科学综合	1
材料科学, 纳米科技	1

Interpreting Halide Perovskite Semiconductor Photoluminescence Kinetics

ivySCI AI Smartly Parses PDF, Answers Researchers' Questions, and Helps You Understand Papers in Seconds

Journal Info

Category	Quartile
NANOSCIENCE & NANOTECHNOLOGY	1