# Nguyen Van Duc

> Nguyen Van Duc investigates the role of dimensional perovskite heterostructures — stacking 2D Ruddlesden-Popper phases atop conventional 3D MAPbI₃ — in suppressing moisture-driven degradation while simultaneously reducing lead content through bismuth and antimony partial substitutions at Hanoi University of Science and Technology's Physics Institute. Under Prof. Le Thi Lan, he has developed a sequential-deposition blade-coating protocol that controllably nucleates the 2D capping layer from dilute butylammonium iodide solutions post-crystallisation of the 3D bulk, achieving a well-defined interface confirmed by cross-sectional TEM and time-of-flight SIMS depth profiling. The 2D/3D heterostructure solar cells achieve power conversion efficiencies of 20.1% on 1 cm² area and maintain 88% initial efficiency after 1,000 hours of 85% relative humidity exposure — far exceeding the lifetime of unpassivated 3D perovskite controls. His lead-reduced Bi/Sb co-substituted variants sacrifice only 1.8% absolute efficiency while reducing lead content by 40%, meeting emerging EU REACH restrictions on lead in photovoltaics. A Vingroup Innovation Foundation grant supports the research, and collaboration with a Thai renewable energy research institute extending the work toward ASEAN climate conditions demonstrates regional technology relevance.

*Source: [https://selltoscientists.com/phd/nguyen-van-duc/](https://selltoscientists.com/phd/nguyen-van-duc/)*

**Institution:** Hanoi University of Science and Technology
**Field:** Perovskite Photovoltaics
**Advisor:** Prof. Le Thi Lan
**Thesis:** Compositional Engineering of 2D/3D Perovskite Heterostructures for Humidity-Resistant and Lead-Reduced Photovoltaic Applications
**Publications:** 2

## Skills

- perovskite spin-coating & blade-coating
- XRD phase characterisation
- J-V hysteresis analysis
- accelerated ageing IEC 61215 protocols

## Industry transition signals

- Vingroup Innovation Foundation grant
- presenting at HOPV 2026 Milan
- collaborating with Thai renewable energy institute

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