Pentavalent impurities Impurity atoms with 5 valence electrons produce n-type semiconductors by contributing extra electrons. Trivalent impurities Impurity atoms with 3 valence electrons produce p-type semiconductors by producing a  hole  or electron deficiency.he Doping of Semiconductors. The addition of a small percentage of foreign atoms in the regular crystal lattice of silicon or germanium produces dramatic changes in their electrical properties, producing n-type and p-type semiconductors.
Vienna: Annual Weather Averages. July is the hottest month in Vienna with an average temperature of 19Â°C (66Â°F) and the coldest is January at -1Â°C (30Â°F) with the most daily sunshine hours at 9 in July. The wettest month is June with an average of 74mm of rain. Loading weather data.
Innsbruck Climate & Temperature. 1  Innsbruck, Austria is at 47 16'N, 11 21'E, 581 m (1906 ft). 2  See map. 3  Innsbruck has a humid continental climate with severe winters, no dry season, warm summers and strong seasonality (K ppen-Geiger classification: Dfb). During summer average high temperatures are 24.3Â°C (75.8Â°F) and average low temperatures are 12Â°C (53.6Â°F). 2  Come autumn/ fall temperatures decrease achieving average highs of 14.7Â°C (58.4Â°F) during the day and lows of 5Â°C (41Â°F) generally shortly after sunrise.