Publications by Tong Wang | EPFL Graph Search

Optimal containment control for a class of heterogeneous multi-agent systems with actuator faults

This article investigates the optimal containment control problem for a class of heterogeneous multi-agent systems with time-varying actuator faults and unmatched disturbances based on adaptive dynamic programming. Since there exist unknown input signals i ...

WILEY2023

Overcome Low Intrinsic Conductivity of NiOx Through Triazinyl Modification for Highly Efficient and Stable Inverted Perovskite Solar Cells

Ulf Anders Hagfeldt, Bowen Yang, Hui Chen, Jiabao Yang, Tong Wang

Nickel oxide (NiOx) is a promising hole transport material in inverted organic-inorganic metal halide perovskite solar cells. However, its low intrinsic conductivity hinders its further improvement in device performance. Here, we employ a trimercapto-s-tri ...

WILEY-V C H VERLAG GMBH2022

N-Type Conductive Small Molecule Assisted 23.5% Efficient Inverted Perovskite Solar Cells

Ulf Anders Hagfeldt, Xiong Li, Bowen Yang, Hui Chen, Jiabao Yang, Tong Wang, Hadi Salari

Because of the compatibility with tandem devices and the ability to be manufactured at low temperatures, inverted perovskite solar cells have generated far-ranging interest for potential commercial applications. However, their efficiency remains inadequate ...

WILEY-V C H VERLAG GMBH2022

Deep defect passivation and shallow vacancy repair via an ionic silicone polymer toward highly stable inverted perovskite solar cells

Ulf Anders Hagfeldt, Bowen Yang, Hui Chen, Jiabao Yang, Tong Wang

Additive engineering is an effective strategy for defect passivation and performance improvement of perovskite solar cells (PSCs). However, few additives have achieved outstanding stability with high efficiency by simultaneously passivating deep and shallo ...

ROYAL SOC CHEMISTRY2022