14:15 〜 14:30 ▲ [17p-Z15-4] Ligand length effect on triplet energy transfer of PbS quantum dot based NIR-to-visible photon upconversion system with direct-attachable emitter 〇Neeti Tripathi1、Kenji Kamada1、Masanori Ando2、Tomoko Akai1 (1.NMRI, AIST、2.BMRI, AIST)