Short-Wave Infrared Optoelectronics with Colloidal CdHgSe/ZnCdS Core/Shell Nanoplatelets

IF 6.5 1区物理与天体物理 Q1 MATERIALS SCIENCE, MULTIDISCIPLINARY

ACS Photonics Pub Date : 2024-12-19 DOI:10.1021/acsphotonics.4c01944

Hossein Roshan, Anatol Prudnikau, Jinfei Dai, Matilde Cirignano, Francesco De Boni, Mirko Prato, Fabian Paulus, Vladimir Lesnyak, Francesco Di Stasio

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Abstract

Colloidal semiconductor nanocrystals (NCs) are an efficient and cost-effective class of nanomaterials for optoelectronic applications. Advancements in NC-based optoelectronic devices have resulted from progress in synthetic chemistry, adjustable surface properties, and optimized device architectures. Semiconductor nanoplatelets (NPLs) stand out among other NCs due to their precise growth control, yielding uniform thickness with submonolayer roughness. In this study, we demonstrate the versatility of core/shell Cd_xHg_1–xSe/Zn_yCd_1–yS NPLs for optoelectronic applications in the short-wave infrared (SWIR) spectral range. We employed the very same core/shell NPLs for the fabrication of light-emitting diodes and photodetectors alike, achieving significant performance in both electroluminescence (external quantum efficiency ranging from 7.5% at 1280 nm to 3.8% at 1550 nm) and detection (responsivity of 0.24 A W^–1 at 1200 nm).

Abstract Image

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胶体CdHgSe/ZnCdS核/壳纳米薄片的短波红外光电子学研究

胶体半导体纳米晶体（NCs）是一种高效、经济的光电应用纳米材料。基于nc的光电子器件的进步源于合成化学的进步、可调节的表面特性和优化的器件结构。半导体纳米片（NPLs）因其精确的生长控制而在其他纳米片中脱颖而出，产生均匀的厚度和亚单层粗糙度。在这项研究中，我们证明了核/壳CdxHg1-xSe / ZnyCd1-yS NPLs在短波红外（SWIR）光谱范围内光电子应用的通用性。我们使用相同的核/壳NPLs来制造发光二极管和光电探测器，在电致发光（在1280 nm处的外量子效率为7.5%至1550 nm处的3.8%）和检测（在1200 nm处的响应度为0.24 A W-1）方面都取得了显著的性能。

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来源期刊

ACS Photonics NANOSCIENCE & NANOTECHNOLOGY-MATERIALS SCIENCE, MULTIDISCIPLINARY

CiteScore

11.90

自引率

5.70%

发文量

438

审稿时长

2.3 months

期刊介绍： Published as soon as accepted and summarized in monthly issues, ACS Photonics will publish Research Articles, Letters, Perspectives, and Reviews, to encompass the full scope of published research in this field.