Tao, W., He, G., Feng, Q., Wang, Y., Li, T., Li, Y., Shi, E., Nan, G., Zhu, H. (2025). Direct Charge-Transfer Transition Drives Triplet Generation and Photon Upconversion in 2D Hybrid Perovskites. Journal of the American Chemical Society. https://doi.org/10.1021/jacs.5c14867