Pressure dependence of singlet and triplet excitons in amorphous polymer semiconductorsK. Paudel, D. Moghe, M. Chandrasekhar, P. Yu, S. Ramasesha, U. Scherf and S. GuhaEPL, 104 2 (2013) 27008DOI: https://doi.org/10.1209/0295-5075/104/27008