Question
A semiconductor dopped with a donor impurity is
✓
Answer
(b) is called $N-type.$
An element which when added to a semiconductor provides unbound or free electrons to the semiconductor which may serve as current carriers. Typically, donors are atoms which have more valence electrons than the atoms of the semiconductor material into which they are introduced in small quantities as an impurity or dopant. since such donor impurities have more valence electrons than the semiconductor, a semiconductor doped with donor impurities is an $n-$ type semiconductor.
Need a full question paper?
Generate a complete, print-ready paper with questions like this in minutes — across 16+ boards, with answer keys.
Explore more
Similar questions
The wave nature of electrons was experimentally verified by,
An electromagnetic wave travels along $z-$axis. Which of the following pairs of space and time varying fields would generate such a wave
→An ideal gas is expanding such that $\mathrm{PT}^2=$ constant. The coefficient of volume expansion of the gas is
→In a sensitive meter bridge apparatus the bridge wire should possess
For previous objective, which of the following graphs is correct
Two particles each of mass $m$ and charge $q$ are attached to the two ends of a light rigid rod of length $2R$. The rod is rotated at constant angular speed about a perpendicular axis passing through its centre. The ratio of the magnitudes of the magnetic moment of the system and its angular momentum about the centre of the rod is
→In an elastic collision between disks $A$ and $B$ of equal mass but unequal radii, $A$ moves along the $x$ -axis and $B$ is stationary before impact. Which of the following is possible after impact?
→Two metallic blocks $M_{1}$ and $M_{2}$ of same area of cross-section are connected to each other (as shown in figure). If the thermal conductivity of $M _{2}$ is $K$ then the thermal conductivity of $M _{1}$ will be ]...............$K$ [Assume steady state heat conduction]
→A thermally insulated rigid container contains an ideal gas heated by a filament of resistance $100 \,\Omega$ through a current of $1\,A$ for $5$ min then change in internal energy is...... $kJ$
→An upright object is placed at a distance of $40\, cm$ in front of a convergent lens of focal length $20\, cm$. A convergent mirror of focal length $10\, cm$ is placed at a distance of $60\, cm$ on the other side of the lens. The position and size of the final image will be
→