Kim, S., Cho, J., Lee, S., Shin, Y., Lee, J., Jang, T., Kim, H., Oh, J., Lee, S., Ko, K., Kang, J., Lee, J., Flavin, M. T., Kang, D., Jang, B. C., Ahn, J., Lee, Y., Won, S. M., Park, J., Oh, S. (2026). Timing‐Dependent Spiking Neural Network: Board‐Level Hardware Implementation with Photoelectroactive Van der Waals Synapses. Advanced Materials. https://doi.org/10.1002/adma.202517613