{'fraction_non_alphanumeric': 0.03664921465968586, 'fraction_numerical': 0.032722513089005235, 'mean_word_length': 5.0236220472440944, 'pattern_counts': {'":': 0, '<': 0, '<?xml version=': 0, '>': 1, 'https://': 0, 'lorem ipsum': 0, 'www.': 0, 'xml': 0}, 'pii_count': 0, 'substrings_counts': 0, 'word_list_counts': {'cursed_substrings.json': 0, 'profanity_word_list.json': 0, 'sexual_word_list.json': 0, 'zh_pornsignals.json': 0}}
Remarkable differences in photoluminescence properties between BaF2:Eu3+ microrods and nanorods.

The preparation process and photoluminescent properties of one-dimensional BaF2:Eu3+ nanorods (NRs) and microrods (MRs) were investigated. The results indicate that the samples were NRs with uniform diameters in the range of 30-50 nm, and lengths in the range of 1.2-3 microm when cooled to room temperature naturally. However, the samples were MRs with length of 1.5-3.0 microm and outer diameters of 200-250 nm when cooled to room temperature immediately. Furthermore, the relative intensity of 5D0 --> 7F2 depended on the two structures obtained under different temperatures. This work demonstrates that a MRs may be more favorable than NRs for photoluminescence.