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# Tin-based solar cells extend heat retention, challenging efficiency ceiling
- URL: https://adjacent.media/signals/tin-based-solar-cells-extend-heat-retention-challenging-efficiency-ceiling/
- Published: 2026-09-28T16:11:41.000Z
- Updated: 2026-09-28T16:11:41.000Z
- Description: A team at the University of [institution] has engineered tin-based perovskite solar cells that retain thermal energy 1,000 times longer than conventional silicon cells, potentially circumventing the Shockley-Queisser limit that has capped single-junction solar efficiency at 33% for decades.
- Author: Jonathan Greene
- Tags: #signal, theme-connected, hardware, energy, infrastructure

Source: [Slashdot: Hardware](https://hardware.slashdot.org/story/26/09/26/0716210/new-tin-based-solar-cells-trap-heat-1000-times-longer-could-beat-33-limit?utm%5Fsource=rss1.0mainlinkanon&utm%5Fmedium=feed)

A team at the University of \[institution\] has engineered tin-based perovskite solar cells that retain thermal energy 1,000 times longer than conventional silicon cells, potentially circumventing the Shockley-Queisser limit that has capped single-junction solar efficiency at 33% for decades. Using tin instead of lead reduces heat loss—addressing the largest source of wasted power in current photovoltaic design, where phonons (heat energy) escape before conversion. At scale and with viable manufacturing costs, this approach could deliver 40%+ efficiency gains.