{'fraction_non_alphanumeric': 0.047151277013752456, 'fraction_numerical': 0.014734774066797643, 'mean_word_length': 5.065476190476191, 'pattern_counts': {'":': 0, '<': 0, '<?xml version=': 0, '>': 0, '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}}
Highly Efficient All-Polymer Solar Cells Processed from Nonhalogenated Solvents.

The remarkable advance of all-polymer solar cells (all-PSCs) achieved in the past decades is primarily powered by the innovation of polymer acceptors. However, most of high-performance all-PSCs are dominantly fabricated with halogenated solvents, which are detrimental to human bodies and the environments. Herein, we report the eco-friendly solvent-processed all-PSCs, based on wide-bandgap polymer PSTZ as donor and newly synthesized narrow-bandgap polymer DCNBT-IDT as acceptor. When processed with o-xylene and tetrahydrofuran (THF), PSTZ:DCNBT-IDT-based all-PSCs yielded remarkable power conversion efficiencies (PCEs) of 7.23% and 8.77% with high short-circuit currents ( J scs) of 12.94 and 14.12 mA cm -2 , respectively. The results indicate that the utilization of an all-polymer blend based on narrow polymer acceptor and compatible polymer donor is an effective strategy for advancing eco-friendly solvent-processed all-PSCs.