DataVXACS Applied Materials & InterfacesPaper
journal article·2020-02-05

Ultrawide Band Gap Oxide Nanodots (Eg > 4.8 eV) for a High-Performance Deep Ultraviolet Photovoltaic Detector

Hao Kan, Wei Zheng, Chen Fu, Richeng Lin, Jingting Luo, Feng Huang

ACS Applied Materials & Interfaces· Volume 12· Issue 5
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Source abstract

Abstract

Recently, deep ultraviolet (DUV) detectors based on gallium oxide (Ga2O3) have become promising in industrial and aerospace applications because of their inherently ultrawide band gaps (4.5–4.9 eV). Because most of them are difficult to be prepared, the lattice mismatch with the substrate and the expensive cost have to be taken into consideration. Because of such problems, the solution-processible nanodots (NDs) with ultrasmall size provide a solution. Here, we propose to use γ-Ga2O3 NDs as the DUV-sensitive layer to construct a DUV p–i–n-type detector with photovoltaic properties (p-graphene/γ-Ga2O3 NDs/n-SiC). The device exhibits a high photoresponsivity (5.8 mA/W) and detectivity (7.6 × 1010 jones) with a 250 nm source illumination under 0 V bias. Moreover, the DUV/UV injection ratio (R250/R360) reaches 103. These results demonstrate a new way to manufacture low-cost, high-performance DUV detectors based on γ-Ga2O3.
Source: openalex_inverted_index · Quality: baseline

Research context

NanomaterialsElectronic materials

OpenAlex topics: Ga2O3 and related materials · ZnO doping and properties · Gas Sensing Nanomaterials and Sensors

SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.

Affiliations

Shenzhen Key Laboratory of Advanced Thin Films and Applications, College of Physics and Optoelectronic Engineering, Shenzhen University, 518060 Shenzhen, China

Key Laboratory of Optoelectronic Devices and Systems of Ministry of Education and Guangdong Province, College of Optoelectronic Engineering, Shenzhen University, 518060 Shenzhen, China

State Key Laboratory of Optoelectronic Materials and Technologies, School of Materials, Sun Yat-sen University, 510275 Guangzhou, China

Funding

Ministry of Science and Technology of the People's Republic of China · China Postdoctoral Science Foundation · National Natural Science Foundation of China · Shenzhen Science & Technology Project

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