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SEM image of the as-synthesized products.
(a), (b) Low-magnification TEM images of the as-synthesized pure InP nanotubes. (c) High-magnification TEM image of the synthesized InP tube. The inset between (c) and (d) is an ED pattern from  zone axis of InP. (d) High-resolution TEM image from the very small area [marked as “A” in Fig. 3(c)] of the InP nanotube wall. (e) EDS spectrum from a single InP tube.
(a)–(d) Low-magnification TEM images of the In partially filled InP nanotubes.
(a), (b) TEM images of the synthesized InP nanotubes under strong electron irradiation. (c), (d) TEM images of In particles at tips of the synthesized InP nanotubes.
Room-temperature photoluminescence spectrum from the as-synthesized InP nanotubes.
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