Efficient energy transfer in a hybrid organic-inorganic van der Waals heterostructure
Two-dimensional (2D) materials offer strong light-matter interaction and design flexibility beyond bulk semiconductors, but an intrinsic limit is the low absorption imposed by the atomic thickness. A long-sought-after goal is to achieve complementary absorption enhancement through energy transfer (ET) to break this limit. However, it is found challenging due to the competing charge transfer (CT) process and lack of resonance in exciton states. Here, we report highly efficient ET in a 2D hybrid organic-inorganic heterostructure (HOIST) of Me-PTCDI/WS<sub>2</sub>. Resonant ET is observed leading to enhanced WS<sub>2</sub> photoluminescence (PL) by 124 times. We identify Dexter exchange between the Frenkel state in donor and an excited 2<i>s</i> state in acceptor as the main ET mechanism, as supported by density functional theory calculations. We further demonstrate ET-enhanced phototransistor devices with enhanced responsivity by nearly 1000 times without sacrificing the response time. Our results expand the understanding of interlayer relaxation processes in 2D materials and open opportunities in optoelectronic devices.
Authors
- Huijuan Zhao (ORCID: https://orcid.org/0009-0000-4889-3811)
- Lianhui Wang (ORCID: https://orcid.org/0000-0001-9030-9172)
- Yi Shi (ORCID: https://orcid.org/0000-0002-1082-0315)
- Jianbin Xu (ORCID: https://orcid.org/0000-0003-0509-9508)
- Zhilong Tang
- Xuetao Gan (ORCID: https://orcid.org/0000-0003-2469-5807)
- Haiming Zhu (ORCID: https://orcid.org/0000-0001-7747-9054)
- Jingsi Qiao (ORCID: https://orcid.org/0000-0001-6464-5500)
- Ruixiang Fei (ORCID: https://orcid.org/0000-0003-4958-3959)
- Li Yang (ORCID: https://orcid.org/0000-0002-8611-6359)
- Songlin Li (ORCID: https://orcid.org/0000-0002-3995-9580)
- Xinran Wang (ORCID: https://orcid.org/0000-0002-3975-1667)
- Zhan Li (ORCID: https://orcid.org/0000-0001-6993-8820)
- Wei Ji (ORCID: https://orcid.org/0000-0001-5249-6624)
- Xiaoqing Chen (ORCID: https://orcid.org/0000-0001-7386-5185)
- Li Gao (ORCID: https://orcid.org/0000-0001-6362-5487)
- Cheng Sun (ORCID: https://orcid.org/0000-0002-8415-6285)
- Zehua Hu (ORCID: https://orcid.org/0000-0002-1185-2992)
- Chun Huang
Institutions
- Beijing Institute of Technology (CN)
- Northwestern Polytechnical University (CN)
- Chinese University of Hong Kong (HK)
- Washington University in St. Louis (US)
- Nanjing University of Posts and Telecommunications (CN)
- Beijing Institute of Optoelectronic Technology (CN)
- Collaborative Innovation Center of Advanced Microstructures (CN)
- Zhejiang University (CN)
- Renmin University of China (CN)
- Nanjing University (CN)
- Ministry of Industry and Information Technology (CN)
Publication Details
- Journal
- Science Advances
- Published
- 2025-09-05
- DOI
- https://doi.org/10.1126/sciadv.adw3969
- Citations
- 5
- Primary Topic
- 2D Materials and Applications
- Type
- article
- Field-Weighted Citation Impact
- 2.59