Solution Route to PbSe Films with Enhanced Thermoelectric Transport Properties. -High-quality PbSe films are synthesized from solutions of Pb(NO3)2, nitrilotriacetic acid, ascorbic acid, and Na2SeSO3 (70°C, 3 h). The samples are characterized by XRD, SEM, TEM, and thermoelectric measurements. Electrical transport properties including low resistivity, high Seebeck coefficient, and high carrier mobility of the films at 300 K are superior to those of films synthesized by other solution routes and comparable with those of films prepared by vacuum-based methods. The PbSe films show a maximum thermoelectric power factor of 31.5 μWcm -1 K -1 at 440 K, which is larger than that of bulk PbSe by 57%, making the PbSe films promising thermoelectric films. -(SUN, Z.; LIUFU*, S.; CHEN, X.; CHEN, L.; Eur.