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We combine biodegradable plastic (polyvinyl alcohol/glycerol polymer), and cellulose-based tissue paper in a very short time (5 s) by a facile way to form a new matrix, named plastic-paper, which has high optical transmittance (~ 89%) and high optical haze (~ 90%) in broadband. Results showed that the plastic-paper is durable in different solvents, with high folding strength (over 3500 folding times) and good mechanical strength (> 30 MPa tensile strength). Interestingly, the plastic-paper presents a two-sidedness of surface morphology. The smooth side shows high light transmittance and the rough side presents high optical haze. The smooth side of the plastic-paper is successfully applied to Organic Light-Emitting Diode (OLED). When the rough surface of plastic-paper is used in solar cells, the maximum output power increases by 2.6% compared with bare solar cells. The developed plastic-paper with high optical transmittance and high optical haze holds a great potential in flexible optoelectronic devices. [ABSTRACT FROM AUTHOR]