In situ photoluminescence probe to study the melting behavior of regioregular poly(3-hexylthiophene)Ning Li, Tongfei Shi, Changhui Ye, Xuesong Zeng, Xinhua Li, Yufeng Zhao, Wenbo Wang, Bukang Zhou, Huahua Duan and Yuqi WangEPL, 107 2 (2014) 28007DOI: https://doi.org/10.1209/0295-5075/107/28007